Update git submodules

* Update docs/submodules/aaf/certservice.git from branch 'master'
  to d21436888be42d4ddc9a3311ee97ea2f30006791
  - Merge "Fix timeout issue when cert service is unavailable"
  - Fix timeout issue when cert service is unavailable
    
    Issue-ID: AAF-1107
    Signed-off-by: Tomasz Wrobel <tomasz.wrobel@nokia.com>
    Change-Id: I0fd5f2615345e9d018af766b665971b90de6c3a0
    
1 file changed