Updated git submodules

Project: appc master 7c6de6c3343aeb05b8d2113bc2cb9a7468c48f87

Unit test for SdcArtifactHandlerConstants.java

Unit test for SdcArtifactHandlerConstants.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%2Futils%2FSdcArtifactHandlerConstants.java

Change-Id: I21e97b7afcd58196ea064be4c4e8e9dc38cf487b
Issue-ID: APPC-793
Signed-off-by: amshegokar <AS00500801@techmahindra.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 6e63000..7c6de6c 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 6e63000117632ac7e8c9eb34c4dc1e9163e62ecf
+Subproject commit 7c6de6c3343aeb05b8d2113bc2cb9a7468c48f87