Updated git submodules

Project: appc master 2c73e06f03d6b3d83ead42b4eec3cd40c81865e5

Unit test for YANGGenerationException.java

Unit test for YANGGenerationException.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%2Fexception%2FYANGGenerationException.java

Change-Id: Ic23b9d863da6981090feeaad79cd1afa895b8e24
Issue-ID: APPC-772
Signed-off-by: shubhada <SV00449682@techmahindra.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index cd296af..2c73e06 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit cd296af560a10b84dd943ff6b2a360f7b59f5f4d
+Subproject commit 2c73e06f03d6b3d83ead42b4eec3cd40c81865e5