Update git submodules

* Update docs/submodules/aaf/certservice.git from branch 'master'
  to 0d4320e07d220219876e77f5faf301be3a8a8a49
  - Improve validation of country code
    
    Issue-ID: AAF-1107
    
    Signed-off-by: pwielebs <piotr.wielebski@nokia.com>
    Change-Id: Id8c1ca149fd65746a02ee480cfc8abbb6b9f7b5c
    
1 file changed