bump cloud_controller submodule pointer

cloud_controller
    git shortlog ec0b1f9..HEAD
        Bob Nugmanov (1):
              disable xml parsing

        Dale Olds (1):
              Enforce token signature policy.

        Dr Nic Williams (2):
              Bump em-hiredis/hiredis
              Always define AppConfig to get the nice error

        Joel D'sa (4):
              Fixed a couple of log messages
              Fix the use of deprecated api
              Fixed the method call to create a user in the UAA
              Merge "Fixed the method call to create a user in the UAA"

Change-Id: I33606858bfdfe44a05e6fe92e44d621b2090b4e6