* update helm to v2.7.0

* Update main.yml

* 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

Eventually 2.3 support will be dropped, so this is
a temporary change.

* Refactor downloads to use download role directly

Also disable fact delegation so download delegate works acros OSes.

* clean up bools and ansible_os_family conditionals

When downloading containers or files, use boolean
as a default value.

* add istio addon

* add addons to a ci job

* Set no_proxy to all local ips

* Use proxy settings on all necessary tasks

In case ssh.config is set to use bastion, synchronize needs to use it too.

* Upgrade to kubernetes v1.8.0

hyperkube no longer contains rsync, so now use cp

* Enable node authorization mode

* change kube-proxy cert group name

* Enable upgrade to kubeadm

* fix kubedns upgrade

* try upgrade route

* use init/upgrade strategy for kubeadm and ignore kubedns svc

* Use bin_dir for kubeadm

* delete more secrets

* fix waiting for terminating pods

* Manually enforce kube-proxy for kubeadm deploy

* remove proxy. update to kubeadm 1.8.0rc1

Fixes #1660

* Enable HA deploy of kubeadm

* raise delay to 60s for starting gce hosts

This upgrade has been testing offline on a 1.7.5 cluster

* kubeadm support

* move k8s master to a subtask
* disable k8s secrets when using kubeadm
* fix etcd cert serial var
* move simple auth users to master role
* make a kubeadm-specific env file for kubelet
* add non-ha CI job

* change ci boolean vars to json format

* fixup

* Update create-gce.yml

* Update create-gce.yml

* Update create-gce.yml

* Refactor downloads

Add prefixes to tasks (file vs container)
Remove some delegates
Clean up some conditions

* Update ansible.cfg

the uploads.yml playbook was broken with checksum mismatch errors in
various kubespray commits, for example, 3bfad5ca
which updated the version from 3.0.6 to 3.0.17 without updating the
corresponding checksums.

update calico releases link

* Updates Controller Manager/Kubelet with Flannel's required configuration for CNI
* Removes old Flannel installation
* Install CNI enabled Flannel DaemonSet/ConfigMap/CNI bins and config (with portmap plugin) on host
* Uses RBAC if enabled
* Fixed an issue that could occur if br_netfilter is not a module and net.bridge.bridge-nf-call-iptables sysctl was not set

* Adding yaml linter to ci check

* Minor linting fixes from yamllint

* Changing CI to install python pkgs from requirements.txt

- adding in a secondary requirements.txt for tests
- moving yamllint to tests requirements

- Switched Calico images to be pulled from quay.io
- Updated Canal too

Change kubelet deploy mode to host
Enable cri and qos per cgroup for kubelet
Update CoreOS images
Add upgrade hook for switching from kubelet deployment from docker to host.
Bump machine type for ubuntu-rkt-sep

This aligns calico component versions with Calico release 2.1.5 and
fixes an issue with nodes being unable to schedule existing workloads
as per [#349](https://github.com/projectcalico/cni-plugin/issues/349)

* Enable weave seed mode for kubespray

* fix task Weave seed | Set peers if existing peers

* fix mac address variabilisation

* fix default values

* fix include seed condition

* change weave var to default values

* fix Set peers if existing peers