Add releasenote for CNF support

* Add releasenote file for bp/cnf-support-with-etsi-nfv-specs

Change-Id: Ib64deef79fb7197d234f47ae836df082d3170053
Implements: blueprint cnf-support-with-etsi-nfv-specs

releasenotes/notes/extend-k8s-support-with-sol003-c63760c65e5a38ae.yaml

@@ -0,0 +1,23 @@
+---
+prelude: >
+    This release contains the new features based on ETSI NFV specifications.
+    The REST API and data models in ETSI NFV-SOL documents are added:
+
+    ETSI NFV-SOL003 v2.6.1 VNF Lifecycle Management
+    * Scale VNF
+    * Update VNF
+    * Rollback VNF
+    ETSI NFV-SOL005 v2.6.1
+    * Fetch VNF Package Artifacts
+
+    Also, the support for Kubernetes VIM is extended to use ETSI NFV-SOL based
+    operations. The major version of resources such as Deployment, DaemonSet,
+    StatefulSet, and ReplicaSet can be deployed as VNF with Instantiate VNF
+    operation.
+
+features:
+  - |
+    Adds Container based VNF support with ESTI NFV-SOL003 v2.6.1 VNF Lifecycle
+    Management. Users can create, instantiate, terminate, and delete VNF on
+    Kubernetes VIM. The Kubernetes resource files are available as VNFD and
+    uploaded as a part of VNF Package.