AAI-1461 -1464 Update vpn-binding/pnf for CCVPN

AAI-1461 -1464 Update vpn-binding/pnf for CCVPN

Issue-ID: AAI-1461
Add properties to vpn-binding:
access-provider-id, access-client-id, access-topology-id, src-access-node-id,
src-access-ltp-id, dst-access-node-id, dst-access-ltp-id, operational-status,
model-customization-id, model-version-id, model-invariant-id
Make ids and operational-status indexed.
Add CCVPN EdgeRules for vpn-binding to p-interface.

Accidentally squashed in second commit for:
Issue-ID: AAI-1464
Add properties to pnf schema:
admin-status, operational-status, model-customization-id, model-version-id,
model-invariant-id

Make these properties indexed as well:
admin-status, operational-status

Change-Id: I30b75262d3e01cfae2cf77d9be9da26a56a049ed
Signed-off-by: Keong Lim <keong.lim@huawei.com>