Updated git submodules

Project: appc master 16fe5b694fe78271fd846373bf3850d0817f6390

Coverage for yang-generator object class

Unit Test Coverage for Leaf.java

Sonar Link:
https://sonar.onap.org/code?id=org.onap.appc%3Aappc&selected=org.onap.appc%3Aappc-yang-generator%3Asrc%2Fmain%2Fjava%2Forg%2Fonap%2Fappc%2Fyang%2Fobjects

Change-Id: I133ffe9688e7b63024d154a8bef2c5559fb546df
Issue-ID: APPC-704
Signed-off-by: shubhada <SV00449682@techmahindra.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 84fed80..16fe5b6 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 84fed80a912de04b4fbd4383d468a5b258f1238b
+Subproject commit 16fe5b694fe78271fd846373bf3850d0817f6390