Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to ece150b7f8acc61dd983f6674bf9c8d4f086b84c
  - added assert statements in 4 jUnits
    
    Issue-ID: APPC-1859
    Change-Id: I82620e573e99fab83870da8402947989d3497895
    Signed-off-by: Rupinder <rupinsi1@in.ibm.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 2d2cfcf..ece150b 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 2d2cfcffbc2032be20034f69f34cc72983b1cfe6
+Subproject commit ece150b7f8acc61dd983f6674bf9c8d4f086b84c