Update git submodules

* Update docs/submodules/appc.git from branch 'elalto'
  to a43ba49af7296f1b1369a8d53b99ccb91c45fea7
  - update release note for unknown issue
    
    update relese note
    
    Issue-ID: APPC-1710
    Change-Id: I810a49a8f72ed9c77869b1c1cdb1435c303bdd15
    Signed-off-by: Taka Cho <takamune.cho@att.com>
    
1 file changed