* network_plugin/custom_cni: add CNI to apply provided manifests

Add a new simple custom_cni to install provided Kubernetes manifests.
This could be useful to use manifests directly provided by a CNI when
there are not support by Kubespray (i.e.: helm chart or any other manifests
generation method).

Co-authored-by: James Landrein <james.landrein@proton.ch>
Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

* network_plugin/custom_cni: add test with cilium

Co-authored-by: James Landrein <james.landrein@proton.ch>
Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

---------

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>
Co-authored-by: James Landrein <james.landrein@proton.ch>

* Update fedora35 vagrant box url

* Update Terraform to 1.3.7

* Update Vagrant to 2.3.4

* add terraform lock files to ignore list

* move contrib/terraform/metal to contrib/terraform/equinix to reflect upstream change

We made all vagrant jobs non-voting because those jobs were not stable.
However the setting allowed a pull request which broke vagrant jobs
completely merged into the master branch.
To avoid such situation, this makes one of vagrant jobs voting.
Let's see the stability of the job.

To verify the hardening method works always.
The configuration comes from docs/hardening.md

Fix yaml format of hardening.yml

Add condition to skip 040 test for hardening

To block merging pull requests which contain typo automatically.

Today we have many contributions to contrib/offline/ and some PRs
contained invalid coding style for those scripts.
This enables shellcheck to make such invalid coding style easily.

To test Kubespray on Rocky Linux 8 with vagrant, this adds it to
the Vagrantfile.

During code-review, reviwers needed to take care of README.md also
should be updated when the pull request updated component versions.
This adds the corresponding check to reduce reviwer's burden.

* add parametrization to molecule_run.sh

* [CI] split molecule tests to allow parallelization of work

* [terraform] use modern day equinix metal provider

* [CI] ensure packet job tests metal

* [etcd] ensure etcd is properly upgraded when managed by kubeadm

* [CI] add periodic job to test upgrade of etcd managed by kubeadm

* [ansible] make ansible 5.x the new default version and move different versions tested to nightly jobs

* [CI] jobs were missing proper ansible cleanup

* [calico] make vxlan encapsulation the default

* don't enable ipip encapsulation by default
* set calico_network_backend by default to vxlan
* update sample inventory and documentation

* [CI] pin default calico parameters for upgrade tests to ensure proper upgrade

* [CI] improve netchecker connectivity testing

* [CI] show logs for tests

* [calico] tweak task name

* [CI] Don't run the provisioner from vagrant since we run it in testcases_run.sh

* [CI] move kube-router tests to vagrant to avoid network connectivity issues during netchecker check

* service proxy mode still fails connectivity tests so keeping it manual mode

* [kube-router] account for containerd use-case

This fixes the following types of failures:
- empty-string-compare
- literal-compare
- risky-file-permissions
- risky-shell-pipe
- var-spacing

In addition, this changes .gitlab-ci/lint.yml to block the same issue
by using the same method at Kubespray CI.

* CI: fix test name debian10-aio was a 2 instance default

* CI: Fix running ubuntu20-aio-docker

* CI: Fix running ubuntu18-aio-docker

* containerd: change default resolvconf_mode to host_resolvconf

* Wait for kube-apiserver to come back after pod refresh

* Handle resolv.conf gracefully

* Retain currently configured DNS entries to ensure we don't break the resolvers

* Suse uses wickedd for network management so no dhcp hooks

* Molecule: increase ansible timeout

* CI: Increase ansible timeout to 120s for Packet jobs

* Alpha-NodeSwap: allow nodes to use swap

* CI: Add Fedora 35 with experimental swap job

* OEL7: Fix CentOS7 Extras for OEL7

* Molecule: add logs collection for jobs

* Add Fedora 35 image, support and CI

* Cleanup tests and allow_failure for vagrant