To enhance system security, the following unused openstack users
are removed from host:
murano
rabbitmq
glance
cinder
nfv
heat
panko
gnocchi
aodh
magnum
And the following openstack users' login shell are disabled:
ceilometer
keystone
Change-Id: Ie6a0937f9194e24ce188403561f87c2069747ccd
Closes-Bug: 1837446
Signed-off-by: Andy Ning <andy.ning@windriver.com>