Update release docs

- Also synched up the API changes in openapi yml file
- Step 1 and 2 of the release process

Issue-ID: CPS-1662
Change-Id: I5b9485497a27a3dee8639faedfa9c1bd8ed3265e
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index 29b933e..56a8c6b 100755
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -43,7 +43,11 @@
 
 Features
 --------
-    - None
+    - `CPS-1272 <https://jira.onap.org/browse/CPS-1272>`_ Add Contains operation to CPS Path
+    - `CPS-1573 <https://jira.onap.org/browse/CPS-1573>`_ Remove 32K limit for DB operations
+    - `CPS-1627 <https://jira.onap.org/browse/CPS-1627>`_ Dependency versions uplift because of vulnerability issues
+    - `CPS-1629 <https://jira.onap.org/browse/CPS-1629>`_ Ordering of leaf elements to support combination of AND/OR in cps-path
+    - `CPS-1637 <https://jira.onap.org/browse/CPS-1637>`_ Extend hazelcast to work on kubernetes
 
 Version: 3.3.0
 ==============