Invalid choice configure-maas-url when upgrading to 1.7.2rc1

[Adam Collard]

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The following packages were automatically installed and are no longer required:
  python-oops python-oops-datedir-repo python-oops-twisted python-oops-wsgi
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up maas-cluster-controller (1.7.2~rc1+bzr3350-0ubuntu1~trusty2) ...
usage: __main__.py [-h] [-c FILENAME]
                   {atomic-write,check-for-shared-secret,customize-config,generate-dhcp-config,install-shared-secret,install-uefi-config,upgrade-cluster}
                   ...
__main__.py: error: invalid choice: 'configure-maas-url' (choose from u'atomic-write', u'check-for-shared-secret', u'customize-config', u'generate-dhcp-config', u'install-shared-secret', u'install-uefi-config', u'upgrade-cluster')
dpkg: error processing package maas-cluster-controller (--configure):
 subprocess installed post-installation script returned error exit status 2