* Enable nodelocaldns by default

* Enable nodelocaldns by default

* nodelocaldns is now default

* Disable enable_nodelocaldns for the addons CI jobs

Disable enable_nodelocaldns for the addons CI jobs to make sure things still work without nodelocaldns

* Added generic CNI network plugin

* Added CNI network plugin documentation

* added necessary fix

* Fix the file path for all.yml and k8s-cluster.yml

* Fix --node-labels namespace error "unknown labels specified"

* Update templates and configs kubelet node-labels

* 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

Signed-off-by: André R. de Miranda <andre@miranda.work>

quote values for kube_oidc_groups_prefix and kube_oidc_username_prefix values to accept colon, e.g oidc: (#4305)

This will fix error: error converting YAML to JSON: yaml: line 36: mapping values are not allowed in this context

Signed-off-by: Abdulaziz AlMalki <almalki.a@gmail.com>

Co-Author: Paweł Skrzyński

an 'until' clause is required or 'retries' is ignored

(see note @ https://docs.ansible.com/ansible/latest/user_guide/playbooks_loops.html#do-until-loops)

* Vagrantfile: Bump openSUSE to Leap 15.0

* roles: container-engine: Add 'containerd' package for openSUSE

The 'containerd' package contains the docker-containerd and
docker-containerd-shim binaries. We also need to ensure that the latest
version is installed since an older version may already be present (eg GCE
images)

* Remove docker log-opts for opensuse

* roles: bootstrap-os: Use lowercase 'o' for openSUSE

OpenSUSE is not a valid family name. The correct one is openSUSE

* roles: bootstrap-os: Update zypper cache before first installation

The zypper cache may be outdated so ensure that it's fully updated
before we try and install the bootstrap packages.

* robust handling of API server SANs

* use apiserver_loadbalancer_domain_name if it is defined, according to PR 3977

The iteritems() dictionary's method has been removed in Python3. Using
this method in Jinja2 templates limits the execution to Python2 which
will be deprecated in 2020[1]. This change replaces that method for
the items() method as it's suggested in the official website[2].

[1] https://pythonclock.org/
[2] https://docs.ansible.com/ansible/latest/user_guide/playbooks_python_version.html#dict-iteritems

* Update CoreDNS to 1.4.0

* Update readme to reflect CoreDNS update

* Update DNS Autoscaler

* Update downloads too

* Fix yamllint

* Fix yamllint

* enable kubelet client certificate rotation

* change to variable kubelet_rotate_certificates

Both the `yum` and `apt` modules support a list as input, this allows us avoid the slower `with_items` approach, which can take a long time with a large count of cluster nodes.