The I2c12255fce11a8f6976fe5afc76357446c1e32aa patch adds an option
to disable deploy steps, but with hard-coded resources in tripleoclient.
This instead provides an environment file, which can be modified for each
version as the resource interfaces evolve and/or be backported to old versions
where we need this functionality, e.g for fast-forward upgrades
Change-Id: Iff19de020e6cc7f3eee9a0b8091454d71dc7f889