Add health check mesage types

This change adds the health check message types to the main
RIC message type list.

Issue-ID: RICAPP-25

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I9010ae719c27ff5a6271fa8fe05e2499eb83759f
diff --git a/CHANGES b/CHANGES
index 0b2898c..7ea8af9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2,6 +2,9 @@
 API and build change  and fix summaries. Doc correctsions
 and/or changes are not mentioned here; see the commit messages.
 
+2020 March 10; version 3.5.1
+	Add missing health check message types.
+	
 2020 March 9; version 3.5.0
 	Added new wormhole send function: rmr_wh_call().