Check permutations of router migrations

This patch adds tests to check all possible router migrations, from and
to: legacy, dvr, ha and dvr+ha.

The tests are divided into different classes so as to not reach the
quota (tempest resources are cleaned up as part of the tearDownClass).

Related-Bug: #1654991
Depends-On: I4e08a97158dc4538c6f021c049c6e60fb7293459
Change-Id: I5b9fc4a81a1e6d59102c016e716000e68aaf4e0a
3 files changed
tree: 452cd1aa43b06b37eaddd8521a5dd3b4c62eb759
  1. neutron/