* Enable HA deploy of kubeadm

* raise delay to 60s for starting gce hosts

* fix apply for netchecker upgrade and graceful upgrade

* Speed up daemonset upgrades. Make check wait for ds upgrades.

* Cleaning up cert checks for vault

* Removing all unnecessary etcd certs from each node

* Removing all unnecessary kube certs from each node

* 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

* Fix netchecker update side effect

kubectl apply should only be used on resources created
with kubectl apply. To workaround this, we should apply
the old manifest before upgrading it.

* Update 030_check-network.yml

* Add kube dashboard, enabled by default

Also add rbac role for kube user

* Update main.yml

* Refactor downloads

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

* Update ansible.cfg

Store vault users passwords to credentials dir. Create vault and etcd roles after start vault cluster (#1632)

Removed unnecessary root user

This sets br_netfilter and net.bridge.bridge-nf-call-iptables sysctl from a single play before kube-proxy is first ran instead of from the flannel and weave network_plugin roles after kube-proxy is started

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.

Due to various occasional docker bugs, removing a container will sometimes fail. This can often be mitigated by trying again.

* Fix an error with Canal when RBAC are disabled

* Update using same rbac strategy used elsewhere

This allows the node authorization plugin to function correctly

  * using separated vault roles for generate certs with different `O` (Organization) subject field;
  * configure vault roles for issuing certificates with different `CN` (Common name) subject field;
  * set `CN` and `O` to `kubernetes` and `etcd` certificates;
  * vault/defaults vars definition was simplified;
  * vault dirs variables defined in kubernetes-defaults foles for using
  shared tasks in etcd and kubernetes/secrets roles;
  * upgrade vault to 0.8.1;
  * generate random vault user password for each role by default;
  * fix `serial` file name for vault certs;
  * move vault auth request to issue_cert tasks;
  * enable `RBAC` in vault CI;

lost executable path

* Use kubectl apply instead of create/replace

Disable checks for existing resources to speed up execution.

* Fix non-rbac deployment of resources as a list

* Fix autoscaler tolerations field

* set all kube resources to state=latest

* Update netchecker and weave

Canal will be covered by a separate PR

* Drop legacy calico logic

* add calico as a daemonset

Refactored how rbac_enabled is set
Added RBAC to ubuntu-canal-ha CI job
Added rbac for calico policy controller

* Add RBAC policies to dnsmasq

* fix merge conflict

* yamllint

* use .j2 extension for dnsmasq autoscaler