* Add support for http(s)_proxy to CoreOS and Fedora

* fix opensuse proxy support

* Fix CoreOS proxy support

* update documentation

This change ensures that etcd_extra_vars variable applies
to events etcd as well.

* Validate vagrant file on CI

* Install vagrant

* Install vagrant

* Install vagrant

* Install vagrant

* Install vagrant

* Install vagrant

* Test vagrant validate

* Download to delegate and sync files when download_run_once

* Fail on error after saving container image

* Do not set changed status when downloaded container was up to date

* Only sync containers when they are actually required

Previously, non-required images (pull_required=false as
image existed on target host) were synced to the target
hosts. This failed as the image was not downloaded to
the download_delegate and hence was not available for
syncing.

* Sync containers when only missing on some hosts

* Consider images with multiple repo tags

* Enable kubeadm images pull/syncing with download_delegate

* Use kubeadm images list to pull/sync

'kubeadm config images pull' is replaced by collecting the images
list with 'kubeadm config images list' and using the commonly
used method of pull/syncing the images.

* Ensure containers are downloaded and synced for all hosts

* Fix download/syncing when download_delegate is a kubernetes host

* Update CI to use 2.10.0 release

* Add rsync as it's required to use synchronize

Add etcd role dependency on kube user to avoid etcd role failure when running scale.yml with a fresh node. (#3240) (#4479)

Change-Id: I1588458b54c52443ad8d0afbd266f77ac0afea67

* Run dns_late preinstall tasks on all k8s nodes

Related issue: #4656

Change-Id: I63f8559ef1a497b7580ab084561e6603fe647834

* Fix ansible-lint

Change-Id: Ia5b33fa63dbc36d8c3e9557ef3f2ea02af2325a5

* Fix recover_control_plane lint issues

Change-Id: I16643a3193c11b6ba704e9698812cac7e4fd19a8

Close #4113

When docker_container_storage_setup is false,
docker service should not depend on docker-storage-setup service,
because it's not installed.

For example, when using overlay2 on recent RHEL 7/Centos 7 kernels,
you most likely don't need it.

* Fix nodeselectors for contiv and nginx-ingress

Change-Id: Ib3eb6bd87193c69a90ee944c9164a0b6792c79ba

* Set kube proxy mode to iptables for addons task

Change-Id: Iff71a71f672405c74b4708c71db15ddc4391a53a

* kube-apiserver will fail if used comma as separator

* Fix kubeadm upload certs with when condition

Change-Id: I916dd2375b71eea2386047c7f185a2f8361f7a61

* Update kubeadm-secondary-experimental.yml

Change-Id: I131d77bb9d16cc0f252dd86166c29f72daa9a64a

Cilium requires a high kernel. rhel7 and centos7 are too low, so they are removed.
Bumping ubuntu to ubuntu-1804

Change-Id: Ib1bffa45b8f9ed0ba500f751714372b3a3f7878b

* Fix metrics-server deployment

* Make metrics server work

* Fix sample inventory

* Add support calico kubernetes datastore and typha.

* Add typha_enabled to kubespray-defaults.

Use host_architecture variable.

Change-Id: I71dc793641bc168e40419e38f33f68f5325e77a9

Change-Id: I2c97c4753089eb3ec2e6b01b2681a8be98ecbb57

* Pass ansible_ssh_user as host_var

Co-authored-by: Damian Darczuk <damian.darczuk@intel.com>
Co-authored-by: Paweł Pałucki <pawel.palucki@intel.com>

* Create a directory before downloading container images to ansible host

Co-authored-by: Damian Darczuk <damian.darczuk@intel.com>
Co-authored-by: Paweł Pałucki <pawel.palucki@intel.com>

* Set private key usuing synchronize task options

Co-authored-by: Damian Darczuk <damian.darczuk@intel.com>
Co-authored-by: Paweł Pałucki <pawel.palucki@intel.com>

* Mark "Calico | Set global as_num" as "unchanged"

This command executes with "--skip-exists" parameter, so it is idempotent
and should not be marked as "changed".

* trigger ci