Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to d7422e0ef739a61cadd536da1967174562d053ad
  - added test cases to CachedElementTest.java
    
    to increase code coverage
    
    Issue-ID: APPC-1086
    Change-Id: Idfb3ce36d41fdec4a5286da63b8a9592c1c83a96
    Signed-off-by: Sandeep J <sandeejh@in.ibm.com>
    
1 file changed