fix(scheduler): send environment to the process
fix(tests): check for immovable response

"Deis" in "Powered by Deis" is configured by an environment variable
called $POWERED_BY. We should not be checking for Deis, as it can be
defined as something else.
Merge pull request #2627 from bacongobbler/fix-bash

fix(scheduler): send environment to the process
feat(contrib): add PREFIX option to digitalocean script

When provisioning new nodes, they are prefixed with a name of "deis-$i",
where $i is the node ID. Adding a prefix option allows us to prefix
the name with something other than "deis" such that we can discern
between different clusters on the same DO account.
fix(contrib/digitalocean): use beta channel on DO
Merge pull request #2631 from carmstrong/do-beta

fix(contrib/digitalocean): use beta channel on DO
fix(tests): add docs for local testing with s3cmd
Merge pull request #2630 from bacongobbler/add-do-prefix

feat(contrib): add PREFIX option to digitalocean script
fix(router): reload nginx after enabling SSL
fix(contrib): use absolute path to user-data

if you run the rackspace provision script outside of contrib/rackspace,
it will fail because it will look for a user-data file relative to
your current working directory. Using $CONTRIB_DIR to determine where
the user data is located fixes this.
Merge pull request #2641 from bacongobbler/rackspace-contrib-dir

fix(contrib): use absolute path to user-data
Merge pull request #2632 from carmstrong/s3cmd_docs

fix(tests): add docs for local testing with s3cmd
Merge pull request #2638 from carmstrong/fix-controller_ssl

fix(router): reload nginx after enabling SSL
chore(*): Allow testing against CoreOS alpha

Allow testing the against the CoreOS alpha channel.
Fixes #2420