* Adding ability to maintain existing Encryption Secrets at Rest.
If secrets_encryption.yaml is present it will not be overriten with a new kube_encrypt_token.
This should allow for it to be set ahead of a playbook running or maintain it if cluster.yml is ran on the same cluster and the ansible host does not have access to the secrets.
* Setting existing kube_encrypt_token across all master nodes in case it was missing in one or more nodes.
* Added option for encrypting secrets to etcd
* Fix keylength to 32
* Forgot the default
* Rename secrets.yaml to secrets_encryption.yaml
* Fix static path for secrets file to use ansible variable
* Rename secrets.yaml.j2 to secrets_encryption.yaml.j2
* Base64 encode the token
* Fixed merge error
* Changed path to credentials dir
* Update path to secrets file which is now readable inside the apiserver container. Set better file permissions
* Add encryption option to k8s-cluster.yml
