Switch to using bundletester for execution of functional tests,
leveraging tox to build out test virtualenvs.
Rename amulet tests inline with gate-* and dfs-* naming standards.
Update README to refer to functional testing section of the charm
guide.
Change-Id: I77d4e53c792be5a9d101584568677f3ab6e3af8e
The new release of charm-tools no longer ships the charm
command; update minimum version requirement and switch
to using charm-proof instead, unblocking current pep8
failures across all charms.
Also pin the version of requests to 2.6.0 until theblues
(indirect dependency of charm-tools) sort out its
requirements versioning.
Change-Id: Ie6afdd93709b9fa3b4d8c53356b6a7fb4b4e467a