* Require minimum version of Kubernetes

* Remove checksums for kubernetes version 1.12

* Add kube_version to precheck output and add min required version to README

* Fix merge

* Fix defaults

* Fix typo in precheck

This PR adds missing checksums for kubeadm and hyperkube and changes
default version to 1.14.3

Signed-off-by: Sergey Nuzhdin <ipaq.lw@gmail.com>

Signed-off-by: Daniel Holbach <daniel@weave.works>

Long option --become was used in the example but in the comment describing it the short option -b was used.
Use same option in description and example to avoid confusion.

* 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

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

* Update CoreDNS to 1.4.0

* Update readme to reflect CoreDNS update

* Create packet.md

* Update README.md

* Update README.md

* Update packet.md

download the latest version

* Update packet.md

Upstream Changes:

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

Our Changes:

  - Sync templates with upstream changes

* added hardware requirements in README.md

* added hardware requirements in README.md

Change-Id: I27d670803bea82a68d5eb0e49d4677f4afdce55f

* update k8s to 1.13.3

* update README as well

- Creates and defaults an ansible variable for every configuration option in the `kubeproxy.config.k8s.io/v1alpha1` type spec
  - Fixes vars that were orphaned by removing non-kubeadm
  - Fixes previously harcoded kubeadm values
- Introduces a `main` directory for role default files per component (requires ansible 2.6.0+)
  - Split out just `kube-proxy.yml` in this first effort
- Removes the kube-proxy server field patch task

We should continue to pull out other components from `main.yml` into their own defaults files as I did here for `defaults/main/kube-proxy.yml`. I hope for and will need others to join me in this refactoring across the project until each component config template has a matching role defaults file, with shared defaults in `kubespray-defaults` or `downloads`

* Upgrade kubernetes to v1.13.0

* Remove all precense of scheduler.alpha.kubernetes.io/critical-pod in templates

* Fix cert dir

* Use kubespray v2.8 as baseline for gitlab

Upstream Changes:

  - ingress-nginx 0.21.0 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.21.0)

Our Changes:

  - Sync templates with upstream changes
  - Remove --default-backend-service requirement. Use the flag only for custom default backends

Upstream Changes:

-   cert-manager 0.5.2 (https://github.com/jetstack/cert-manager/releases/tag/v0.5.2)

Our Changes:

-   Templates sync with upstream manifests

README contains wrong versions. Let's fix that.

* weave: Upgrade to 2.5.0

Upstream Changes:

-   weave 2.5.0 (https://github.com/weaveworks/weave/releases/tag/v2.5.0)
-   Adds support for Kubernetes `hostPort` mapping
-   Adds support for Kubernetes `ipBlock` NetworkPolicy feature

Our Changes:

-   Templates sync with upstream manifests
-   Remove legacy nodePort fix

* BC for weave < 2.5.0