Closes-Bug: #1398252
-Issue: contrail-storage-stats not started if the node
        is configured as both master and compute storage
-Fix: 1. storage compute list is passed to storage setup
      2. contrail-storage-stats daemon configured/started
         based on this storage compute list
-Test: Verified the changes in both HA and non-HA setups

Change-Id: I7e5884327e854e36a99c1ed8cd3c2ec74a11c8b5