Updated git submodules

Project: appc master 2792e3f2bd8109c3f8c3ac3cd32218e33f060dc0

More updates to lic header in appc properties

License header fixes to reflect 2018 changes in various appc-adapters, appc-client, appc-common, appc-config, appc-dg and appc-directed-graph java and properties files.

Change-Id: Idbe000f175e11ba42f6e83689a2b2d3d353be008
Issue-ID: APPC-996
Signed-off-by: John McClung <jm1364@att.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 8c13e17..2792e3f 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 8c13e176d918d056e027efa77aacc467d7f17c50
+Subproject commit 2792e3f2bd8109c3f8c3ac3cd32218e33f060dc0