feat(security): allow the access to new nodes if we are using the custom firewall
feat(contrib/coreos): add etcd debug unit

This adds an optional service to aid in debugging etcd issues.
Note that it's only enabled in the cloud-config file, not started.
This enables users to `sudo systemctl start debug-etcd` on a machine
before performing tasks which may strain etcd (such as heavy IO),
and then watch the service's journal to see how things like heartbeat
intervals change.
ref(router): change structure to allow the update of go dependencies
ref(test): by default run with logs in debug
fix(router): missing check file in git ignored by .gitignore
docs(troubleshooting_deis): document debug-etcd service
fix(slugbuilder): allow users to cat slugfile

partially reverts deis/slugbuilder@b872515
style(builder): convert tabs to spaces
fix(.gitignore): hide local vagrant config.rb from version control
docs(customizing_deis): remove slugbuilder/slugrunner settings

These were removed in a builder refactor and are no longer respected.
Merge pull request #2795 from mboersma/ignore-config-rb

fix(.gitignore): hide local vagrant config.rb from version control
Merge pull request #2778 from aledbf/fix_router_godeps

ref(router): change structure to allow the update of go dependencies
Merge pull request #2798 from carmstrong/builder_slugbuilder_docs

docs(customizing_deis): remove slugbuilder/slugrunner settings
chore(client+controller): update python requests lib to 2.5.1
Merge pull request #2796 from mboersma/update-py-requests

chore(client+controller): update python requests lib to 2.5.1
feat(pkg): add pkg time

This package is used to control how we utilize the time package across
the Deis Platform, including application logs, component logs, API
datetime structures, etc.
chore(slugbuilder): bump heroku buildpacks
docs(using_buildpacks): add sidenote on Scala buildpack

Play v2.0 apps and above use the Scala buildpack, which requires
a minimum of 512MB for to execute sbt, which invokes the JRE.
Merge pull request #2769 from bacongobbler/bump-buildpacks

chore(slugbuilder): bump heroku buildpacks
docs(releases): update with major/minor and patch procedures