Make worker JSON message case sensitive.

Fixes bug 1091316

It has been decided that we should not change the casing of the
JSON fields for the response that we send back to the API server.

Change-Id: I8c8e3d43cdc98520597381dc7b574a0575c1564f

libra/worker/controller.py

@@ -24,14 +24,13 @@ class LBaaSController(object):
     RESPONSE_SUCCESS = "PASS"
     ACTION_FIELD = 'hpcs_action'
     RESPONSE_FIELD = 'hpcs_response'
-    LBLIST_FIELD = 'loadbalancers'
+    LBLIST_FIELD = 'loadBalancers'
 
     def __init__(self, logger, driver, json_msg):
         self.logger = logger
         self.driver = driver
         self.logger.debug("Entered LBaaSController")
-        # Standardize case on JSON elements
-        self.msg = dict((k.lower(), v) for k, v in json_msg.iteritems())
+        self.msg = json_msg
 
     def run(self):
         """