with the following key:value pairs:

- reset_timeout: 600

Change-Id: I8f04c504a6b37207e57cee16fec97fc41353f82b

- Remove Precise-Icehouse Amulet test definitions if they exist.

- Add Xenial-Newton Amulet test definitions.

- Add Yakkety-Newton Amulet test definitions.

- Use the percona-cluster charm in tests instead of the mysql charm.

- Update amulet for change in svc names on systemd

Change-Id: I649b3e5ce19578ddabba4303a20bfd8d279001e4

Switch to using bundletester for execution of functional tests,
leveraging tox to build out test virtualenvs.

Rename amulet tests inline with gate-*, dev-* and dfs-*
naming standards.

Update README to refer to functional testing section of the charm
guide.

Change-Id: Id617a634f7d12e8acab07ee121f9fd38b8380c17