Without this, pulls are considered for all
hosts groups, even if not targetted by the downloads
`groups` list. Hence, a download/sync is triggered
even though the host does not require the image.

* 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

* Fix metrics-server deployment

* Make metrics server work

* Fix sample inventory

* Add support calico kubernetes datastore and typha.

* Add typha_enabled to kubespray-defaults.

Change-Id: I71dc793641bc168e40419e38f33f68f5325e77a9

* 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>

* Use K8s 1.14 and add kubeadm experimental control plane mode

This reverts commit d39c273d.

* Cleanup kubeadm setup run on first master

* pin kubeadm_certificate_key in test

* Remove kubelet autolabel of kube-node, add symlink for pki dir

Change-Id: Id5e74dd667c60675dbfe4193b0bc9fb44380e1ca

Hashes are added to calicoctl_binary_checksums for both adm and arm platforms.

Based on the CephFS Provisioner Addon, the following changes have been made:
 - Upstream v2.1.1-k8s1.11
 - Configurable Provisioner replicas

This reverts commit 31650862.

* Use Kubernetes 1.14 and experimental control plane support

* bump to v1.14.0

* Add ansible-lint as gitlab-ci step

* Fix jinja2 syntax in include_tasks that breaks ansible-lint

* Use a block scalar to get around gitlab quoting/escaping rules

* Run ansible-lint in verbose mode in CI

* Update CoreDNS to 1.4.0

* Update readme to reflect CoreDNS update

* Update DNS Autoscaler

* Update downloads too

* Fix yamllint

* Fix yamllint

Both kubedns and dnsmasq modes are long not maintained.
We should run dns_late steps at the end because sshd
makes DNS lookups during Ansible run and has 2s timeouts
for each failed lookup trying to connect to coredns before
it is ready.

* Add 1.12.6, sort arm64 descending

* remove 1.10.x checksums (EOL anyways)

* feat(external-provisioner/local-path-provisioner): adds support for local path provisioner

Helpful for local development but also in production workloads (once the
permission model is worked out) where you have redundancy built into the
software uses the PVCs (e.g. database cluster with synchronous
replication)

* feat(local-path-provisioner): adds debug flag, image tag group var

* fix(local-path-provisioner): moves image repo/tag to download role

* test(gce_centos7-flannel): enables local-path-provisioner in test case

* fix(addons): add image repo/tag to commented default values

* fix(local-path-provisioner): typo in jinja template for local path provisioner

* style(local-path-provisioner): debug flag condition re-formatted

* fix(local-path-provisioner): adds missing default value for debug flag

* fix(local-path-provisioner): syntax fix for debug if condition end

* fix(local-path-provisioner): jinja template syntax: if condition white space

Upstream Changes:

  - weave 2.5.1 (https://github.com/weaveworks/weave/releases/tag/v2.5.1)

Our Changes:

  - Sync templates with upstream changes

Currently, the task `container_download | download images for kubeadm config images` fetches etcd image even though it's not required (etcd is bootstrapped by kubespray, not kubeadm).

`kubeadm-images.yaml` is only a subset of `kubeadm-config.yaml`, therefore ``kubeadm config images pull` will try to get all this list (including etcd)

```
# kubeadm config images list --config /etc/kubernetes/kubeadm-images.yaml
k8s.gcr.io/kube-apiserver:v1.13.2
k8s.gcr.io/kube-controller-manager:v1.13.2
k8s.gcr.io/kube-scheduler:v1.13.2
k8s.gcr.io/kube-proxy:v1.13.2
k8s.gcr.io/pause:3.1
k8s.gcr.io/etcd:3.2.24
k8s.gcr.io/coredns:1.2.6
```

When using the `kubeadm-config.yaml` though, it doesn't list etcd image:

```
# kubeadm config images list --config /etc/kubernetes/kubeadm-config.yaml
k8s.gcr.io/kube-apiserver:v1.13.2
k8s.gcr.io/kube-controller-manager:v1.13.2
k8s.gcr.io/kube-scheduler:v1.13.2
k8s.gcr.io/kube-proxy:v1.13.2
k8s.gcr.io/pause:3.1
k8s.gcr.io/coredns:1.2.6
```

This change just adds the etcd endpoints in the `kubeadm-images.yaml` to give a hint to kubeadm it doesn't need etcd image for its boostrapping as etcd is "external".
I confess it is a ugly hack, a better way would be to use a single `kubeadm-config.yaml` for both tasks, but they are triggered by different roles (`kubeadm-images.yaml` is used by download, `kubeadm-config.yaml` by kubernetes/master) at different steps and I didn't want to refactor too many things to prevent breakage. 

This is specially useful for offline installation where a whitelist of container images is mirrored on a local private container registry. `k8s.gcr.io/etcd` and `quay.io/coreos/etcd`  are two different repositories hosting the same images but using *different tags*! 
* coreos/etcd:v3.2.24   
* k8s.gcr.io/etcd:3.2.24 (note the missing 'v' in the tag name)