VOL-172: Support configuration of  traffic descriptor profile for upstream BW allocation to ONU

 * As an operator, I should be able to configure traffic descriptor profiles for upstream BW configuration.
 * As an operator, I should be able to retrieve the configured traffic descriptor profiles.

Additional Notes:
 * xPON Handler and xPON Agent should be able to handle the traffic descriptor configuration.
 * This story does not have impact on adapters until the traffic descriptor is referenced by a TCONT
 * The traffic descriptor profiles should be saved to the database(in memory until config/restore feature is ready).
 * The impact to HA-proxy for load-balancing & distributing of workload is still TBD. As of now, it can be assumed that profiles are available to all VOLTHA instances.

VOL-173: Support configuration of TCONTs as per WT-385 and auto-allocation of alloc-ids

 * As an operator, I should be able to provision a TCONT for the ONU with an existing traffic descriptor profile
 * As an operator, I should be able to retrieve the provisioned TCONT
 * As an operator, I should be able to change the traffic descriptor profile for a TCONT

Additional Notes:

 * alloc-ids should be allocated for the TCONT
 * generic IAdapter interface to be provided that will be used by OLT and ONU adapters for TCONT/alloc-id/BW configuration
 * In the best interest of schedules/timing, in the first step(e.g. POC-3 & trial), assume the queueing model to be supported (to be detailed)  (i.e. no configuration of queueing model)
 * The concerned ONU should receive upstream grants upon provisioning of  TCONT for the ONU

VOL-174: Support configuration of GEMs as per WT-385 and auto-allocation of gemport-ids

 * As an operator, I should be able to provision a GEMPORT object for the ONU and assign to a UNI
 * As an operator, I should be able to retrieve the provisioned GEMPORT

Additional Notes:

 * gemport-ids should be auto-allocated for the GEMPORT object
 * generic IAdapter interface to be provided that will be used by OLT and ONU adapters for GEM port configuration
 * In the best interest of schedules/timing, in the first step(e.g. POC-3 & trial), assume the queueing model to be supported (to be detailed) (i.e. no configuration of queueing model)
 * The concerned OLT and ONU should be configured with the allocated gemport-ids

Change-Id: I451cd7c0eda57c7b9fa1d65d02c749ff2bf0db4b
diff --git a/cli/main.py b/cli/main.py
index 8e51851..6060435 100755
--- a/cli/main.py
+++ b/cli/main.py
@@ -262,9 +262,9 @@
             try:
                 res = stub.GetDevice(voltha_pb2.ID(id=device_id))
             except Exception:
-                self.poutput(self.colorize('Error: ', 'red') + \
-                             'No device id ' + self.colorize(device_id, 'blue') + \
-                             ' is found')
+                self.poutput(
+                    self.colorize('Error: ', 'red') + 'No device id ' +
+                    self.colorize(device_id, 'blue') + ' is found')
                 return
         sub = XponCli(self.get_channel, device_id)
         sub.cmdloop()