Use minimal model imports
Use minimal model imports

odl-mdsal-models is a big feature, pull in only the bits we need,
specifically draft-ietf-netmod-acl-model-07.

Change-Id: Ibeb19d3b59b72b537be499dfaf50595e94ed62b8
JIRA: MDSAL-363
Signed-off-by: Robert Varga <91ae5aa8c7a9f7e57b701db766e23e544aaa6ae9@pantheon.tech>

opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt