VOL-2989 Reboot task's priority is MAX_PRIORITY (255) but doesn't say this task has high priority when adding queue

Change-Id: Ief6f962d2d8318c1c35d217791e40af42a561f9b
diff --git a/VERSION b/VERSION
index 8e8299d..6cdfe8d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.2
+2.4.3-dev
diff --git a/pyvoltha/adapters/extensions/omci/tasks/reboot_task.py b/pyvoltha/adapters/extensions/omci/tasks/reboot_task.py
index a8deac1..cad4484 100644
--- a/pyvoltha/adapters/extensions/omci/tasks/reboot_task.py
+++ b/pyvoltha/adapters/extensions/omci/tasks/reboot_task.py
@@ -96,7 +96,7 @@
         try:
             frame = OntGFrame().reboot(reboot_code=self._flags)
             self.strobe_watchdog()
-            results = yield self._device.omci_cc.send(frame, timeout=self._timeout)
+            results = yield self._device.omci_cc.send(frame, timeout=self._timeout, high_priority=True)
 
             status = results.fields['omci_message'].fields['success_code']
             self.log.debug('reboot-status', status=status)