diff --git a/common/pon_resource_manager/resource_kv_store.py b/common/pon_resource_manager/resource_kv_store.py
index 307b0cd..1ca6530 100644
--- a/common/pon_resource_manager/resource_kv_store.py
+++ b/common/pon_resource_manager/resource_kv_store.py
@@ -1,107 +1,107 @@
-#
-# Copyright 2018 the original author or authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-"""Resource KV store - interface between Resource Manager and backend store."""
-import structlog
-
-from voltha.core.config.config_backend import ConsulStore
-from voltha.core.config.config_backend import EtcdStore
-
-# KV store uses this prefix to store resource info
-PATH_PREFIX = 'service/voltha/resource_manager/{}'
-
-
-class ResourceKvStore(object):
-    """Implements apis to store/get/remove resource in backend store."""
-
-    def __init__(self, technology, device_id, backend, host, port):
-        """
-        Create ResourceKvStore object.
-
-        Based on backend ('consul' and 'etcd' use the host and port
-        to create the respective object.
-
-        :param technology: PON technology
-        :param device_id: OLT device id
-        :param backend: Type of backend storage (etcd or consul)
-        :param host: host ip info for backend storage
-        :param port: port for the backend storage
-        :raises exception when invalid backend store passed as an argument
-        """
-        # logger
-        self._log = structlog.get_logger()
-
-        path = PATH_PREFIX.format(technology)
-        try:
-            if backend == 'consul':
-                self._kv_store = ConsulStore(host, port, path)
-            elif backend == 'etcd':
-                self._kv_store = EtcdStore(host, port, path)
-            else:
-                self._log.error('Invalid-backend')
-                raise Exception("Invalid-backend-for-kv-store")
-        except Exception as e:
-            self._log.exception("exception-in-init")
-            raise Exception(e)
-
-    def update_to_kv_store(self, path, resource):
-        """
-        Update resource.
-
-        :param path: path to update the resource
-        :param resource: updated resource
-        """
-        try:
-            self._kv_store[path] = str(resource)
-            self._log.debug("Resource-updated-in-kv-store", path=path)
-            return True
-        except BaseException:
-            self._log.exception("Resource-update-in-kv-store-failed",
-                                path=path, resource=resource)
-        return False
-
-    def get_from_kv_store(self, path):
-        """
-        Get resource.
-
-        :param path: path to get the resource
-        """
-        resource = None
-        try:
-            resource = self._kv_store[path]
-            self._log.debug("Got-resource-from-kv-store", path=path)
-        except KeyError:
-            self._log.info("Resource-not-found-updating-resource",
-                           path=path)
-        except BaseException:
-            self._log.exception("Getting-resource-from-kv-store-failed",
-                                path=path)
-        return resource
-
-    def remove_from_kv_store(self, path):
-        """
-        Remove resource.
-
-        :param path: path to remove the resource
-        """
-        try:
-            del self._kv_store[path]
-            self._log.debug("Resource-deleted-in-kv-store", path=path)
-            return True
-        except BaseException:
-            self._log.exception("Resource-delete-in-kv-store-failed",
-                                path=path)
-        return False
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""Resource KV store - interface between Resource Manager and backend store."""
+import structlog
+
+from voltha.core.config.config_backend import ConsulStore
+from voltha.core.config.config_backend import EtcdStore
+
+# KV store uses this prefix to store resource info
+PATH_PREFIX = 'service/voltha/resource_manager/{}'
+
+
+class ResourceKvStore(object):
+    """Implements apis to store/get/remove resource in backend store."""
+
+    def __init__(self, technology, device_id, backend, host, port):
+        """
+        Create ResourceKvStore object.
+
+        Based on backend ('consul' and 'etcd' use the host and port
+        to create the respective object.
+
+        :param technology: PON technology
+        :param device_id: OLT device id
+        :param backend: Type of backend storage (etcd or consul)
+        :param host: host ip info for backend storage
+        :param port: port for the backend storage
+        :raises exception when invalid backend store passed as an argument
+        """
+        # logger
+        self._log = structlog.get_logger()
+
+        path = PATH_PREFIX.format(technology)
+        try:
+            if backend == 'consul':
+                self._kv_store = ConsulStore(host, port, path)
+            elif backend == 'etcd':
+                self._kv_store = EtcdStore(host, port, path)
+            else:
+                self._log.error('Invalid-backend')
+                raise Exception("Invalid-backend-for-kv-store")
+        except Exception as e:
+            self._log.exception("exception-in-init")
+            raise Exception(e)
+
+    def update_to_kv_store(self, path, resource):
+        """
+        Update resource.
+
+        :param path: path to update the resource
+        :param resource: updated resource
+        """
+        try:
+            self._kv_store[path] = str(resource)
+            self._log.debug("Resource-updated-in-kv-store", path=path)
+            return True
+        except BaseException:
+            self._log.exception("Resource-update-in-kv-store-failed",
+                                path=path, resource=resource)
+        return False
+
+    def get_from_kv_store(self, path):
+        """
+        Get resource.
+
+        :param path: path to get the resource
+        """
+        resource = None
+        try:
+            resource = self._kv_store[path]
+            self._log.debug("Got-resource-from-kv-store", path=path)
+        except KeyError:
+            self._log.info("Resource-not-found-updating-resource",
+                           path=path)
+        except BaseException:
+            self._log.exception("Getting-resource-from-kv-store-failed",
+                                path=path)
+        return resource
+
+    def remove_from_kv_store(self, path):
+        """
+        Remove resource.
+
+        :param path: path to remove the resource
+        """
+        try:
+            del self._kv_store[path]
+            self._log.debug("Resource-deleted-in-kv-store", path=path)
+            return True
+        except BaseException:
+            self._log.exception("Resource-delete-in-kv-store-failed",
+                                path=path)
+        return False