[UPDATES] Revive 'update_collect_info' tag for minor updates.
[UPDATES] Revive 'update_collect_info' tag for minor updates.

During switch to new 'version discovery' role aformentioned tag
was renamed to 'upgrade_collect_info', which now causes issues
with minor updates:
  The task includes an option with an undefined variable.
  The error was: {{ (undercloud_version|int) }}:
    'undercloud_version' is undefined

Revive correct tag.

Change-Id: Icd96e8e1e75a34f96c193164025b66283cf967ad

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared