fix(gce): update to new path for example userdata
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 #2624 from Xe/fix/gce/filepath

fix(gce): update to new path for example userdata
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
Merge pull request #2630 from bacongobbler/add-do-prefix

feat(contrib): add PREFIX option to digitalocean script