This patch migrates functional tests from Amulet to Zaza. func-test-pr: https://github.com/openstack-charmers/zaza-openstack-tests/pull/70 Change-Id: I92f0a9bdd3677200c775dc82695a3b950a51aac9 Partial-Bug: #1828424
Change bionic test from dev to gate for 18.05. Change-Id: I4d82f73b7b83d5bb597147663d424554d34d7e76