[1.10] Upgrade fails

Traceback (most recent call last): [14/3148]
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 62, in execute
    return self.cursor.execute(sql)
psycopg2.ProgrammingError: relation "piston_consumer" does not exist

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/sbin/maas-region-admin", line 62, in <module>
    main()
  File "/usr/sbin/maas-region-admin", line 58, in main
    run()
  File "/usr/sbin/maas-region-admin", line 51, in run
    management.execute_from_command_line()
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 354, in execute_from_command_line
    utility.execute()
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 346, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/lib/python3/dist-packages/django/core/management/base.py", line 394, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/lib/python3/dist-packages/django/core/management/base.py", line 445, in execute
    output = self.handle(*args, **options)
  File "/usr/lib/python3/dist-packages/maasserver/management/commands/dbupgrade.py", line 266, in handle
    self._rename_piston_to_piston3(database)
  File "/usr/lib/python3/dist-packages/maasserver/management/commands/dbupgrade.py", line 197, in _rename_piston_to_piston3
    "ALTER TABLE piston_consumer RENAME TO piston3_consumer")
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/usr/lib/python3/dist-packages/django/db/utils.py", line 98, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/usr/lib/python3/dist-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 62, in execute
    return self.cursor.execute(sql)
django.db.utils.ProgrammingError: relation "piston_consumer" does not exist

dpkg: error processing package maas-region-controller (--configure):

dpkg: error processing package maas-region-controller (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of maas:
 maas depends on maas-region-controller (= 1.10.0~alpha1+bzr4543-0ubuntu1~xenial3); however:
  Package maas-region-controller is not configured yet.

dpkg: error processing package maas (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processi
ng:
 maas-region-controller
 maas
E: Sub-process /usr/bin/dpkg returned an error code (1)