Implement ref-relax-for-delete

[Witaut Bajaryn]

Services like kube-manager use it to be able to delete a NetworkPolicy while having VirtualNetworks that refer to it.

The commit that added ref-relax-for-delete in Python API server: https://github.com/Juniper/contrail/commit/610ce99ad52e9598fa02c1cebf6ad6d098b525a9 (Note: the link does not work for some reason. Clone the repo and look at the commit instead).

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47790
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47790
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47790
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47790
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Pawel Zadrozny (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47789
Submitter: Pawel Zadrozny (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/47789
Committed: http://github.com/Juniper/contrail/commit/e4ab82f186403bbfa7d0d1e7fdea7031efc18b15
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit e4ab82f186403bbfa7d0d1e7fdea7031efc18b15
Author: Witaut Bajaryn <email address hidden>
Date: Wed Nov 21 20:10:18 2018 +0100

Add client.GRPC

ContrailServiceClient does not implement Service,
because its methods have additional `opts ...grpc.CallOption` arguments.

Make a shim so that it can be used where a Service is expected.

Partial-Bug: 1803185
Change-Id: Ic35e68523de093b5ef173f71dfb3adb1b0961de6

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/47646
Submitter: Witaut Bajaryn (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/47646
Committed: http://github.com/Juniper/contrail/commit/fe1bf290104ef368deaafc5e35127b4db5d61d0f
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit fe1bf290104ef368deaafc5e35127b4db5d61d0f
Author: Witaut Bajaryn <email address hidden>
Date: Thu Nov 8 20:52:53 2018 +0100

Implement ref-relax-for-delete endpoint

Add a `relaxed` boolean column to all reference tables.
When relaxing a reference, set relaxed = true in the ref table.
When deleting a resource, delete all backrefs with relaxed = true.

Add basemodels.KindToSchemaID.

Closes-Bug: 1803185
Change-Id: Ieed6cc45eba28f5ae8a5f4796b033f7038ba9abe