Changes a neutron call to be project scoped as system
scoped can't create a resource and, and removes the unset
which no longer makes sense now that
I86ffa9cd52454f1c1c72d29b3a0e0caa3e44b829
has merged removing the legacy vars from devstack.
Also renames intenral use setting of OS_CLOUD to IRONIC_OS_CLOUD
as some services were still working with system scope or some sort
of mixed state occuring previously as some of the environment variables
were present still, however they have been removed from devstack.
This change *does* explicitly set an OS_CLOUD variable as well on
the base ironic job. This is because things like grenade for Xena
will expect the variable to be present.
Depends-On: https://review.opendev.org/c/openstack/devstack/+/818449
Change-Id: I912527d7396a9c6d8ee7e90f0c3fd84461d443c1
350c2f7a50