OpenstackOperations: fixes due to openstack CLI
Due to migration to Openstack CLI in OpenStackOperations.robot and
DevstackUtils.robot, introduced in the following commit
02eb3418af8de2831ad8a5aa1d119746fffd1bac ("Migrate to Openstack CLI"),
appropriate fix is needed for "openstack security group rule create"
command and formatted output is needed for "openstack router list",
"openstack port list" commands.
Change-Id: I9831e3909c38c7a70389ba29754526a2f675111f
Signed-off-by: Valentina Krasnobaeva <valentina.krasnobaeva@6wind.com>