Add support for config file parsing and watching

This change introduces the ability to load and parse
the json xapp descriptor (config) file. It also provides
the ability for the xAPP to register a callback function
which is executed when the descriptor is changed.

Issue-ID: RIC-428

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I7a1147aa8055599ef4b36ab17960e32ccb5b741f
diff --git a/docs/rel-notes.rst b/docs/rel-notes.rst
index 4841bcb..13e3542 100644
--- a/docs/rel-notes.rst
+++ b/docs/rel-notes.rst
@@ -18,6 +18,12 @@
 Cherry Release
 ==============
 
+2020 July 30; version 2.2.0
+---------------------------
+Add support for configuration file reading and change
+notification.
+
+
 2020 July 22; version 2.1.0
 ---------------------------
 Added metrics support (RIC-381).