[VOL-4648] Add connection to sysrepo and subscribe to NETCONF 'get' requests with dummy callback

Change-Id: I9124d9b9430ee1358885bdb5c65dedfb3c5d3978
diff --git a/build/yang-files/bbf-device-aggregation.yang b/build/yang-files/bbf-device-aggregation.yang
new file mode 100644
index 0000000..24a5141
--- /dev/null
+++ b/build/yang-files/bbf-device-aggregation.yang
@@ -0,0 +1,154 @@
+module bbf-device-aggregation {
+  yang-version 1.1;
+  namespace "urn:bbf:yang:bbf-device-aggregation";
+  prefix bbf-dev-agg;
+
+  import bbf-yang-types {
+    prefix bbf-yang;
+  }
+  import bbf-device-types {
+    prefix bbf-dvct;
+  }
+  import ietf-yang-schema-mount {
+    prefix yangmnt;
+  }
+
+  organization
+    "Broadband Forum <https://www.broadband-forum.org>
+     Common YANG Work Area";
+  contact
+    "Comments or questions about this Broadband Forum YANG module
+     should be directed to <mailto:help@broadband-forum.org>.
+
+     Editor:      Nick Hancock, ADTRAN
+
+     Editor:      Ludwig Pauwels, Nokia
+
+     PS Leader:   Joey Boyd, ADTRAN
+
+     WA Director: Joey Boyd, ADTRAN
+
+     WA Director: Sven Ooghe, Nokia";
+  description
+    "This module contains a collection of YANG definitions for
+     supporting the Broadband Forum requirements on device
+     aggregation. As such, this module is specific to access network
+     equipment (e.g., BBF-specified Access Nodes and FTTdp DPUs).
+
+     Copyright (c) 2017-2022, Broadband Forum
+
+     Redistribution and use in source and binary forms, with or
+     without modification, are permitted provided that the following
+     conditions are met:
+
+     1. Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+
+     2. Redistributions in binary form must reproduce the above
+        copyright notice, this list of conditions and the following
+        disclaimer in the documentation and/or other materials
+        provided with the distribution.
+
+     3. Neither the name of the copyright holder nor the names of its
+        contributors may be used to endorse or promote products
+        derived from this software without specific prior written
+        permission.
+
+     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+     CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+     ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+     The above license is used as a license under copyright only.
+     Please reference the Forum IPR Policy for patent licensing terms
+     <https://www.broadband-forum.org/ipr-policy>.
+
+     Any moral rights which are necessary to exercise under the above
+     license grant are also deemed granted under this license.
+
+     This version of this YANG module is part of TR-383a5; see
+     the TR itself for full legal notices.";
+
+  revision 2022-03-01 {
+    description
+      "Amendment 5.
+       * Approval Date:    2022-03-01.
+       * Publication Date: 2022-03-01.";
+    reference
+      "TR-383a5: Common YANG Modules
+                 <https://www.broadband-forum.org/technical/download/
+                          TR-383_Amendment-5.pdf>";
+  }
+
+  container devices {
+    description
+      "Aggregation and management of multiple devices.";
+    list device {
+      key "name";
+      description
+        "An aggregated device.";
+      leaf name {
+        type bbf-yang:string-ascii64;
+        description
+          "The unique name of the device.";
+      }
+      leaf type {
+        type identityref {
+          base bbf-dvct:device-type;
+        }
+        mandatory true;
+        description
+          "The type of device.";
+      }
+      container identification {
+        presence
+          "Presence of the container indicates that data nodes that
+           identify the device exist.";
+        description
+          "Data nodes identifying the device instance.";
+        choice identification {
+          mandatory true;
+          description
+            "A choice for different methods to uniquely identify a
+             device instance.";
+          case hardware-inventory-data {
+            leaf mfg-name {
+              type string;
+              description
+                "The name of the manufacturer of the device.";
+            }
+            leaf model-name {
+              type string;
+              description
+                "The vendor-specific model name associated with the
+                 device.";
+            }
+            leaf serial-num {
+              type string;
+              description
+                "The vendor-specific serial number string for the
+                 device.";
+            }
+          }
+        }
+      }
+      container data {
+        description
+          "The data nodes of the device's schema.";
+        yangmnt:mount-point "device-yang-library" {
+          description
+            "The YANG library associated with the device.";
+        }
+      }
+    }
+  }
+}