Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to fcf5ab8738a4681301130a0b66ee64a7c0af264d
  - Test coverage in design-services-provider
    
    Add test cases to ArtifactHandlerClient
    
    Issue-ID: APPC-1436
    Change-Id: I0893526b6f3a532ec422b998bb9cc266850a52a7
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
1 file changed