Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 7eef3293680d233198cb0a437c252a8b59af4b22
  - Test coverage for CommonMessage
    
    Increased coverage from 41% to 95%
    
    Issue-ID: APPC-1462
    Change-Id: I602a0178617f29ab34f7a4ab4400d6e5c442bd9d
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
1 file changed