Backup and restore track progress in job (#4503)

* Backup and restore track progress in job

* Change to stage only updates and fix tests

* Leave HA alone if it wasn't restored

* skip check HA stage message when we don't check

* Change to helper to get current job

* Fix tests

* Mark jobs as internal to skip notifying HA

supervisor/exceptions.py

@@ -44,6 +44,10 @@ class JobNotFound(JobException):
     """Exception for job not found."""
 
 
+class JobInvalidUpdate(JobException):
+    """Exception for invalid update to a job."""
+
+
 class JobGroupExecutionLimitExceeded(JobException):
     """Exception when job group execution limit exceeded."""