This patch switches ironic API to run under uwsgi,
and drops support for running ironic API under mod_wsgi
from ironic's devstack plugin.
It also effectively moves all jobs except grenade ones to
run ironic-api under UWSGI as we start to honor the devstack's
ENABLE_HTTPD_MOD_WSGI_SERVICES variable (which is True by default).
The new variable in devstack plugin to toggle deployment with uwsgi
is IRONIC_USE_WSGI, which defaults to (now confusingly named)
IRONIC_USE_MOD_WSGI for backward compatibility.
Related-Bug: #1719260
Co-Authored-By: anascko <ovoshchana@mirantis.com>
Change-Id: I9ef3aa48db6efe8e2216af785cc13fdb7f754a02
b27396db66