docs(contrib/rackspace): Rackspace details

Added Rackspace Load Balancer details.
docs(*): add load balancer info to EC2 and Rackspace
Merge pull request #1485 from deis/add_load_balancer_instructions

docs(*): add load balancer info to EC2 and Rackspace
chore(*): bump CoreOS to 386.1.0

Includes internal fixes, notably some bigger ones for systemd 215.
Merge pull request #1487 from deis/coreos_386.1.0

chore(*): bump CoreOS to 386.1.0
fix(makefile): delete missing files on rsync

fixes problems seen while working with schema migrations
feat(controller): allow tags for `deis pull`

if the source Build object specifies a tag to be pulled, it will use
that tag as the source rather than `latest`.
chore(registry): bump commit
Merge pull request #1496 from deis/1404-deis-pull-tag

feat(controller): allow tags for `deis pull`
fix(controller/registry): strip hostname from repo

The changes to the registry module did not strip the hostname from the
app image. This fixes that by properly parsing the source for the
repository name in the registry and the tag.
Merge pull request #1500 from deis/hotfix-registry-module

fix(controller/registry): strip hostname from repo
docs(*): make OpDemand the maintainer

OpDemand collectively maintains the images. It's a group effort :)
fix(tests): allow env vars to override important test settings
refactor(tests): update test expectations and get suite passing
docs(tests): update README.md with integration test setup
Merge pull request #1501 from deis/opdemand-maintainer

docs(*): make OpDemand the maintainer
fix(contrib/digitalocean) fix region check

Fix the allowed region checks.
This used to only allow 4 (New York 2), and not any of the others.
Merge pull request #1503 from nathansamson/do-fix

fix(contrib/digitalocean) fix region check
Merge pull request #1492 from deis/fix-rsync-delete

fix(makefile): delete missing files on rsync
style(controller): flake8