Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 43a3aa0b19516eb491f5fd4e9e9dccafb78d4640
  - Added Junit Class For LicenseModelBuilder.java
    
    Added Junit Class For LicenseModelBuilder.java
    
    Issue-ID: APPC-1372
    Change-Id: I9acb703ccec2775c5c64e0be3a14ea93eb85b868
    Signed-off-by: Sudarshan Kumar <sudars19@in.ibm.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 15e9309..43a3aa0 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 15e930973a9de66dda48afa639b31188061f9bd1
+Subproject commit 43a3aa0b19516eb491f5fd4e9e9dccafb78d4640