Update git submodules

* Update docs/submodules/aaf/certservice.git from branch 'master'
  to 28b8bc3127aff034b1b7dcc40a00097bf262c7d7
  - Merge "Fix sonar issue AppExitHandler"
  - Fix sonar issue AppExitHandler
    
    Issue-ID: AAF-1118
    Signed-off-by: Edyta Krukowska <edyta.krukowska@nokia.com>
    Change-Id: I9ed1b206dd0f8130aee11d453f1cdd6eaa534a58
    
1 file changed