Updated git submodules

Project: appc master ae21ee87a8b33c233722135cdfa9a21f0550789d

Unit test coverage for DBException.java

Unit test coverage for DBException.java
Sonar-Link:
https://sonar.onap.org/code?id=org.onap.appc%3Aappc&selected=org.onap.appc%3Aappc-artifact-handler-provider%3Asrc%2Fmain%2Fjava%2Forg%2Fonap%2Fappc%2Fartifact%2Fhandler%2Fdbservices%2FDBException.java

Change-Id: Iae0c5a90358f61560c8e164fa506a0e3e75857f5
Issue-ID: APPC-791
Signed-off-by: amshegokar <AS00500801@techmahindra.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 715965b..ae21ee8 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 715965b6c8d17a073d3162e75ffe82be448ac1ca
+Subproject commit ae21ee87a8b33c233722135cdfa9a21f0550789d