* Switch to Kubernetes v1.16.0

Change-Id: I5d6a9528b2d443750fc5e031aff15ad3ffead158

* Fix download localhost cached file path

Change-Id: I65e79b70e3d1b37265ebc60f41b460cf4b0a0d47

* fix kubeadm etcd for v1.16

Change-Id: I6888a00fd48b530a38b0b31c4095492476af42d2

* disable tf packet jobs

Change-Id: I075c4666547fdea4c50ec04864f38e2cfaa79154

* Disable contiv packet jobs. Fix kube-router

Change-Id: I3170e8789e60711d4cee8faf65f2094480b79b8d

* bump sonobuoy version

Change-Id: Ib946905629c7c53ed88f08fb2f41c454457a0097

* update to kubernetes 1.15.1

* Revert to sonobuoy 0.15.0

* update test timeout from 3 to 5 minutes

* Use K8s 1.15

* Use Kubernetes 1.15 and use kubeadm.k8s.io/v1beta2 for
  InitConfiguration.
* bump to v1.15.0

* Remove k8s 1.13 checksums.

* Update README kubernetes version 1.15.0.

* Update metrics server 0.3.3 for k8s 1.15

* Remove less than k8s 1.14 related code

* Use kubeadm with --upload-certs instead of --experimental-upload-certs due to depricate

* Update dnsautoscaler 1.6.0

* Skip certificateKey if it's not defined

* Add kubeadm-conftolplane.v2beta2 for k8s 1.15 or later

* Support kubeadm control plane for k8s 1.15

* Update sonobuoy version 0.15.0 for k8s 1.15

* Disable kube_api_anonymous_auth by default to secure the setup

* Disable metrics-server in addons. Health endpoint is slow and unstable

* Fix anonymous-auth missing in configuration

* Cleanup a bit

* Fix kube anon auth

* Merge 020_check and 030_check

* Fix pods output and fail if test pods is not ready

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.

* Lint everything in the repository with yamllint

* yamllint fixes: syntax fixes only

* yamllint fixes: move comments to play names

* yamllint fixes: indent comments in .gitlab-ci.yml file

* use not deprecated ansible_play_hosts variable

* Using tests as filters is deprecated

* Fix deprecation warning about pkg list

* Fix random failure in debug: var=result.content|from_json

* netchecker agents are deployed on all k8s-cluster group members

* reducing limits/requests is not enough, switching to n1-standard-2

* gce_centos7 need more cpu

* Remove non-kubeadm deployment

* More cleanup

* More cleanup

* More cleanup

* More cleanup

* Fix gitlab

* Try stop gce first before absent to make the delete process work

* More cleanup

* Fix bug with checking if kubeadm has already run

* Fix bug with checking if kubeadm has already run

* More fixes

* Fix test

* fix

* Fix gitlab checkout untill kubespray 2.8 is on quay

* Fixed

* Add upgrade path from non-kubeadm to kubeadm. Revert ssl path

* Readd secret checking

* Do gitlab checks from v2.7.0 test upgrade path to 2.8.0

* fix typo

* Fix CI jobs to kubeadm again. Fix broken hyperkube path

* Fix gitlab

* Fix rotate tokens

* More fixes

* More fixes

* Fix tokens

* Update defaults to match k8s 1.12 suggestions

* Test if Netchecker works with node ip instead of localhost

* Update defaults to ipvs and coredns

* Update defaults for kube_apiserver_insecure_port

* Update main.yaml

* Adds support for Multus (multiple interfaces) CNI plugin

Multus is a latin word for "Multi". As the name suggests, it acts as a
Multi plugin in Kubernetes and provides multiple network interface
support in a pod. Multus uses the concept of invoking delegates by
grouping multiple plugins into delegates and invoking them in the
sequential order of the CNI configuration file provided in json format.

* Change CNI version (0.1.0->0.3.1) of Contiv to be compatible with Multus

* codestyle tests

* Download destination can be different than local_release_dir

* failed

* version_compare

* succeeded

* skipped

* success

* version_compare becomes version since ansible 2.5

* ansible minimal version updated in doc and spec

* last version_compare

Addition of the .creds extension to the credentials files generated by password lookup in order for Ansible not to consider them as inventory files with inventory_ignore_extensions set accordingly (#2446)

* Disable basic and token auth by default

* Add recommended security params

* allow basic auth to fail in tests

* Enable TLS authentication for kubelet

* Enable upgrade to kubeadm

* fix kubedns upgrade

* try upgrade route

* use init/upgrade strategy for kubeadm and ignore kubedns svc

* Use bin_dir for kubeadm

* delete more secrets

* fix waiting for terminating pods

* Manually enforce kube-proxy for kubeadm deploy

* remove proxy. update to kubeadm 1.8.0rc1

* 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.

* 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

* Clean up debug in check apiserver test

* Change password generation for kube_user

Special characters are not allowed in known_users.csv file

Removed unnecessary root user

Operator can specify any port for kube-api (6443 default) This helps in
case where some pods such as Ingress require 443 exclusively.

Closes: 820
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>