Remove tags from play level as they overrides tags on task level
Remove tags from play level as they overrides tags on task level

This change removes tags from Undercloud Upgrade play level because
all tasks in this play get the same tag. We have tags applied to
individual task and they are overridden by play level tags.

Resolves: OSP-17603

Change-Id: Ib2cc04fdeb96c65636e71c5b70b9c1065a44b859

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