Update git submodules

* Update docs/submodules/policy/apex-pdp.git from branch 'master'
  to ae257d13b8d89da7e599c1ca2b27805d5d10aa93
  - Remove POLICY_APEX_PDP_HOME in Dockerfile
    
    To use POLICY_HOME not POLICY_XXX_HOME
    
    Issue-ID: POLICY-1702
    Change-Id: I145164f662d2d0fdd94875e8bcacd4f7a669309a
    Signed-off-by: shaoqiu <tim.huang@est.tech>
    
1 file changed