Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 423a91b62f381167bf7852c4ac987b96ba06f35c
  - Test coverage for CCAActivator
    
    Increased coverage from 0% to 93%
    
    Issue-ID: APPC-1497
    Change-Id: Ie78ac50a08b47cac9bedb9d34b089ac3ad23ab22
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
1 file changed