Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to c99acfce1a84cb6d7f827f8585af9c01d0383b67
  - Test coverage in wrapperEncryptionTool
    
    Increased coverage from 0% to 81%
    
    Issue-ID: APPC-1409
    Change-Id: I1b4d285eff9fad8a60e855a97ff843078d628862
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 991d833..c99acfc 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 991d833fd7558beaf7f2f2df63deb72dabda3e8a
+Subproject commit c99acfce1a84cb6d7f827f8585af9c01d0383b67