[CORD-2909] Flatten and parameterize charts

Change-Id: I695c1df063b0f6f6ccf280254d54cc701292348f
diff --git a/xos-services/vtn-service/values.yaml b/xos-services/vtn-service/values.yaml
index 385a4ef..a0fb60e 100644
--- a/xos-services/vtn-service/values.yaml
+++ b/xos-services/vtn-service/values.yaml
@@ -1,5 +1,4 @@
 ---
-
 # Copyright 2018-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,21 +13,21 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Default values for exampleservice.
+# Default values for TTN
 # This is a YAML-formatted file.
 # Declare variables to be passed into your templates.
 
 replicaCount: 1
 
-pull_docker_registry:
-
 nameOverride: ""
 fullnameOverride: ""
 
-image:
-  repository: xosproject/vtn-synchronizer
-  tag: master
-  pullPolicy: IfNotPresent
+imagePullPolicy: 'IfNotPresent'
+
+vtn_synchronizerImage: "xosproject/vtn-synchronizer:master"
+
+xosAdminUser: "admin@opencord.org"
+xosAdminPassword: "letmein"
 
 resources: {}
 
@@ -37,40 +36,3 @@
 tolerations: []
 
 affinity: {}
-
-serviceConfig:
-  name: vtn
-  accessor:
-    username: admin@opencord.org
-    password: letmein
-    endpoint: xos-core:50051
-  required_models:
-    - AddressPool
-    - Controller
-    - Network
-    - Node
-    - Port
-    - Service
-    - ServiceInstance
-    - Tag
-    - VTNService
-  dependency_graph: "/opt/xos/synchronizers/vtn/model-deps"
-  models_dir: "/opt/xos/synchronizers/vtn/models"
-  sys_dir: "/opt/xos/synchronizers/vtn/sys"
-  steps_dir: "/opt/xos/synchronizers/vtn/steps"
-  logging:
-    version: 1
-    handlers:
-      console:
-        class: logging.StreamHandler
-      file:
-        class: logging.handlers.RotatingFileHandler
-        filename: /var/log/xos.log
-        maxBytes: 10485760
-        backupCount: 5
-    loggers:
-      'multistructlog':
-        handlers:
-            - console
-            - file
-        level: DEBUG