Update git submodules

* Update docs/submodules/policy/apex-pdp.git from branch 'master'
  to 5052634e60545f5b483660700d47eb4fff5d0d38
  - Merge "Bump apex-pdp to 2.2.1-SNAPSHOT"
  - Bump apex-pdp to 2.2.1-SNAPSHOT
    
    Released 2.2.0
    
    Issue-ID: POLICY-1737
    Change-Id: I144a3c07d3eaf8c53d339eecedf2b3d8d3ce3c7e
    Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
    
1 file changed