Use correct google ns for dns upstream

Fix issue with check_certs playbook

check_certs task "Check_certs | Set 'sync_certs' to true" was failing
due to the dict not existing, this sets defaults that allows the
correct behavior of the conditionals.

fix flannel deployment, remove docker bridge before restarting

Remove need to pre-create writeable dir on CoreOS

Issue-229: Support Proxies in Docker Daemon

Update README.md

upgrade k8s vers, and add a script for future upgrades

fixes the certs issue when masters or not in the kube-node group

Issue 231: ensure ca.pem makes it to multi-masters

Issue 233: Typo with sync_tokens vs. sync_certs

Add native Vagrant support

* set flannel backend type to `host-gw`
* set flannel interface to be eth1 ip

This allows you to simply run `vagrant up` to get a 3 node HA cluster.

* Creates a dynamic inventory and uses the inventory/group_vars/all.yml
* commented lines in inventory.example so that ansible doesn't try to use it.
* added requirements.txt to give easy way to install ansible/ipaddr
* added gitignore files to stop attempts to save unwated files
* changed `Check if kube-system exists` to `failed_when: false` instead of
`ignore_errors`

generate secrets on first master

fix api auth issue for ci tests

use a variable for api's 'root' password

Pull correct variable for etcd initial variable

This shouldn't use the `inventory_hostname` variable, as that will just yield the same variable, but rather use the `host` which we're looping over.