Update git submodules

* Update docs/submodules/policy/engine.git from branch 'master'
  to b536883546b9fa87bce50c7a6d030f6de3aafdce
  - Merge "Cleanup drl files in policy/engine test modules"
  - Cleanup drl files in policy/engine test modules
    
    Issue-ID: POLICY-1895
    Signed-off-by: Rashmi Pujar <rashmi.pujar@bell.ca>
    Change-Id: Ice15aadbafd999b20594c3b6488e115063c985ce
    
1 file changed