Update git submodules

* Update docs/submodules/policy/parent.git from branch 'master'
  to 3b71c9772e0f86b5cef9840668a36569540a037c
  - Adding apex-pdp & distribution documents to parent
    
    Change-Id: If8039f68a1669787685d4a7bdc37dec203901062
    Issue-ID: POLICY-1898
    Signed-off-by: ramverma <ram.krishna.verma@est.tech>
    
1 file changed