Update git submodules

* Update docs/submodules/aaf/authz.git from branch 'master'
  to a555e21d6f23e3c892db86fc9d27960c4b9d6cf4
  - Move code set to 2.1.18, Update from TEST system
    
    Issue-ID: AAF-1081
    Signed-off-by: Instrumental <jgonap@stl.gathman.org>
    Change-Id: I4b885ad2805bdb517cc440bfc8f7af23b8042eb7
    
1 file changed