Remove NovaNetworkPlugin

Nova network was deprecated in Newton and is no longer supported for
regular deployments in Ocata [1].

Complete the removal of nova network support from manila begun in [2]
by removing support for ''nova_net_id`` in the share networks API,
by removing the corresponding column from the share networks DB model,
and by removing the nova network plugins themselves.  Unit tests for
share network api views were refactored to remove redundancy while
extending coverage to the new microversion introduced with this patch
and maintaining full coverage of earlier microversions.

APIImpact
DocImpact
UpgradeImpact

Partially-implements: bp remove-nova-net-plugin

[1] http://docs.openstack.org/releasenotes/nova/unreleased.html
[2] I846b760fa7c01f7f86768399a2bfad9ced7e57cd

Change-Id: I8b9a559fbea61979f01737ed1dc272276c4f1269
2 files changed
tree: 67338639de9dbb0a2c07b4f0eeb06af0fec5dd9a
  1. manila_tempest_tests/