Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 15c9ef0d579285a7caa3a19fc33ba27ed9cfedf4
  - Fix URL for policy
    
    Fix url to remove policies on policy engine API
    
    Issue-ID: CLAMP-398
    Change-Id: I626ae4c7db4cd362203d890899da1dd8ee34cd8c
    Signed-off-by: Determe, Sebastien (sd378r) <sebastien.determe@intl.att.com>
    
1 file changed