Increase maximum supported deploy timeout
Increase maximum supported deploy timeout

This increases the maximum supported deploy timeout
for overcloud deployment to 240 min which is the director
default. We should be able to support a maximum that is at
the minimum the director/tripleo default.

Change-Id: Id310ae69489dd3f9cf8af808be26b3980a516bc0

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