Update git submodules

* Update docs/submodules/dmaap/dbcapi.git from branch 'master'
  to 479c7a5645b6f3f9bf478f925fa2009597871a7b
  - Added MirrorMaker unit tests
    
    Change-Id: I580d350c663f06754a38ae58941de6e812f8cb03
    Signed-off-by: dglFromAtt <dgl@research.att.com>
    Issue-ID: DMAAP-1095
    
1 file changed