Updated git submodules

Project: appc master 754844549a9c4dc30a5661d6de96b515439dcf3d

fixed failing test cases in TimeTest.java

fixed the issue APPC-1112, where few test cases where failing because of
platform dependency. Removed assertEquals and replaced it with
assertNotNull and assertTrue, so that coverage is not affected and the
test case also passes succesfully. Cant use asserEquals here as the
value timestamp is platform dependent.

Issue-ID: APPC-1112
Change-Id: I4b9f786eaa61835765ffdadd0beb9092bc9beb17
Signed-off-by: Sandeep J <sandeejh@in.ibm.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 212f091..7548445 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 212f0917592ed112009e1827fb15c6adb8153636
+Subproject commit 754844549a9c4dc30a5661d6de96b515439dcf3d