Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 6a7b6c092c282884cf263315a4a4802242dcb2fc
  - Update appc-dispatcher for >1 ansible servers
    
    Change Transaction record update logic to handle null instance entry.
    
    Issue-ID: APPC-1516
    
    Change-Id: Ia87e08fbb61d4d0be38802e3e81b45773b1d9498
    Signed-off-by: Dunietz, Irwin <irwin.dunietz@att.com>
    
1 file changed