Improved proxy support

Update to Kubernetes 1.8.2

Update kubedns to 1.14.7 release

Parameterize dockerproject apt repo endpoints

Typo in the apt-get command

fix indentation for network policy option

Typo in the apt-get command

update flannel

Sysctl reload if needed after IP forward enabling

Disable swap in vagrant vms

This allows overriding of apt repo endpoints when internet sources are not accessible. Additionally, switch to using the dockerproject.org gpg key url for apt instead of keyservers.net

All nodes get converted to lowercase, so certs should set
CN with lowercase as well.

Add reload yes to reload sysctl if the value of net.ipv4.ip_forward changes.

- name: Enable ip forwarding
  sysctl:
    sysctl_file: "{{sysctl_file_path}}"
    name: net.ipv4.ip_forward
    value: 1
    state: present
    reload: yes
  tags:
    - bootstrap-os

Move cluster roles and system namespace to new role

It is now enabled by default in 1.8 with the api changed
to networking.k8s.io/v1 instead of extensions/v1beta1.

This should be done after kubeconfig is set for admin and
before network plugins are up.

Use same kubedns_version: 1.14.5 in downloads  and kubernetes-apps/ansible roles

* Fix broken CI jobs

Adjust image and image_family scenarios for debian.
Checkout CI file for upgrades

* add debugging to file download

* Fix download for alternate playbooks

* Update ansible ssh args to force ssh user

* Update sync_container.yml