Add filtering to  share-network-list command

Add filtering share networks command by model's keys:
- name,
- project-id (admin context)
- neutron-net,
- neutron-subnet,
- network-type,
- segmentation-id,
- cidr,
- ip-version,
by associated security service, by creation date.

Add '--offset' and '--limit' options to specify start point
of share networks listing and number of share networks to show.

Remove filtering by status as share_network model doesn't have
such attribute.

Implements bp improve-share-network-list-filtering

Change-Id: Ia9c1e91da480d43cbaf77795691c3c13d5fec94c
Merge "Add filtering to  share-network-list command"