Update git submodules

* Update docs/submodules/aaf/certservice.git from branch 'master'
  to 8bff1cbaeec0ff9aaf82b3873464b04b324f933c
  - Merge "Refactor access to env variables in certservice-client"
  - Refactor access to env variables in certservice-client
    
    Issue-ID: AAF-996
    Signed-off-by: Remigiusz Janeczek <remigiusz.janeczek@nokia.com>
    Change-Id: Ib11998a72e3addefd16587cda5e10fb787e99a62
    
1 file changed