code: def push_cluster_configuration(self, scaleioobj, noUpload = False, noInstall= False, noConfigure = False):
          
          self.logger.debug("push_cluster_configuration(" + "{},{},{},{})".format(scaleioobj, noUpload, noInstall, noConfigure))
          #print "JSON DUMP OF CLUSTER CONFIG:"
          #pprint (json.loads(scaleioobj))
          config_params = {'noUpload': noUpload, 'noInstall': noInstall, 'noConfigure':noConfigure}
  
          r1 = self._im_session.post(
              "{}/{}".format(self._im_api_url,"types/Installation/instances/"),
              headers={'Content-type':'application/json','Version':'1.0'},
              params = config_params, 
              verify=self._im_verify_ssl,
              #json=json.loads(self._cluster_config_cached.to_JSON()),
              json = json.loads(scaleioobj),
              stream=True
          )
          if not r1.ok:
              # Something went wrong
              self.logger.error("Error push_cluster_configuration() - " + "Errorcode: {}".format(r1.status_code))
          
          #print "Response after push_cluster_configuration()"
          
          # RESPONSE NEED TO BE WRAPPED IN try/catch. Cannot assume JSON is returned.
          #print r1.text
          #pprint (json.loads(r1.text))
          return r1.text
docs: Method push cached ScaleIO cluster configuration to IM (reconfigurations that have been made to cached configuration are committed using IM)
          Method: POST
          Attach JSON cluster configuration as request payload (data). Add MDM and LIA passwords)