Updated git submodules

Project: appc master 6ec3768894509d14aba3aba041803e2c04fd22eb

added test case to TestCompareNodeCli.java

added test case to increase code coverage. A part of the else block in
compare method of CompareNode.java was not being covered. Getting
covered now with this test case.

Issue-ID: APPC-1086
Change-Id: I2821ec0c5d9203f5c76e6a091c6734f41333d638
Signed-off-by: Sandeep Jha<sandeejh@in.ibm.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 9fa2ece..6ec3768 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 9fa2ece15b6389389782a56061a919d2a239540d
+Subproject commit 6ec3768894509d14aba3aba041803e2c04fd22eb