GKE: Add ENABLE_CLUSTER_DNS, compute appropriate DNS_SERVER_IP

Move GetHostName and GetDockerEndpoint methods to pkg/util

Modify container hash function to account for pointers by following pointers

Modify hash to be computed using spew library so that nested object values are used instead of pointer

GKE: Limit liveness.sh to server version >0.7.2

Create cluster/addons for things to put into a kubernetes cluster

What I really want is
https://github.com/GoogleCloudPlatform/kubernetes/issues/2953, but
haven't had a chance to code that yet. Maybe it's time. (Then I'd
remove the provider-specific test and just say "is it > 0.7.2, or does
it claim to be capable of something from the future?" The latter
covers the HEAD server case .. though just bumping the server version
immediately after release might also accomplish that, too.)

Boilerplate checks on 2014, but commit included a 2015 (breaks travis)

Revert boilerplate to 2014 until hack/verify-boilerplate.sh is fixed

Also pretty up the JSON (make it real JSON) and streamline the sed in cluster/gce/init.sh.

This fixes #3190.

Allow for easily specifying the type and size of minion disks on GCE.

DNS Server IP outside of PORTAL_NET range for vagrant

Update "/stats" endpoint on kubelet.

Add script to run e2e tests from binary deployment: e2e-from-release.sh

Util to test if all ptr fields are nil

Address some comments from erictune.

Integration test scaffolding fixes

Escape stdout/stderr YAML-like elements for TAP output

Add an example of running Cloud Native Cassandra on k8s.

Typo fix in docs/volumes.md

Fixes https://github.com/GoogleCloudPlatform/kubernetes/issues/3094

We need a way to quickly emulate what Jenkins is doing. This script
easily demonstrates problems like
https://github.com/GoogleCloudPlatform/kubernetes/issues/3190, which
git based e2e runs won't show.

The default --v=10 might be reconsidered.

Without this, the sync loop runs continuously.  IMO: This right here is
why open structs are inferior to explicity constructors that take 75
arguments - you can't forget to pass an argument.

Issue #3192

Fixes https://github.com/GoogleCloudPlatform/kubernetes/issues/3191

Fix local-docker KUBERNETES_MASTER

Don't use pointers for session affinity

Minor cleanups to request - fix initialism on HTTPClientFunc