* Ansible: move to Ansible 3.4.0 which uses ansible-base 2.10.10

* Docs: add a note about ansible upgrade post 2.9.x

* CI: ensure ansible is removed before ansible 3.x is installed to avoid pip failures

* Ansible: use newer ansible-lint

* Fix ansible-lint 5.0.11 found issues

* syntax issues
* risky-file-permissions
* var-naming
* role-name
* molecule tests

* Mitogen: use 0.3.0rc1 which adds support for ansible 2.10+

* Pin ansible-base to 2.10.11 to get package fix on RHEL8

* Docker/Containerd: move downloads urls to containerd-common

* gVisor: initial support for gVisor container runtime

* Update docker package to 20.10.6

* Add Fedora 33 image and CI, remove Fedora 31 (EOL)

* AlmaLinux: ansible>2.9.19 is needed to know about AlmaLinux

* AlmaLinux: identify as a centos derrivative

* AlmaLinux: add AlmaLinux to checks for CentOS

* Use ansible_os_family to compare family and not distribution

By default Ansible stat module compute checksum, list extended attributes and find mime type
To find all stat invocations that really use one of those:
git grep -F stat. | grep -vE 'stat.(islnk|exists|lnk_source|writeable)'

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>

`containerd.io` is the companion package of `docker-ce` and is the
proper package name. This is needed to avoid apt upgrade/dist-upgrade
from breaking kubernetes.

This makes the docker role work the same as the containerd role.
Being able to override this is needed when you have your own debian
repository. E.g. when performing an airgapped installation

This was introduced in 143e2272
Extra repo is enabled by default in CentOS, and is not the right repo for EL8
Instead of adding a CentOS repo to RHEL, enable the needed RHEL repos with rhsm_repository

For RHEL 7, we need the "extras" repo for container-selinux
For RHEL 8, we need the "appstream" repo for container-selinux, ipvsadm and socat

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

yum_repository expect really different params, so nothing to factor here
Ubuntu is not an ansible_os_family, the OS family for Ubuntu is Debian
Check for ansible_pkg_mgr == apt

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

we don't need rpm_key, so nothing to factor here
Ubuntu is not an ansible_os_family, the OS family for Ubuntu is Debian
Check for ansible_pkg_mgr == apt

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Here the desciption from Ansible docs
Corresponds to the --force-yes to apt-get and implies allow_unauthenticated: yes
This option will disable checking both the packages' signatures and the certificates of the web servers they are downloaded from.
This option *is not* the equivalent of passing the -f flag to apt-get on the command line
**This is a destructive operation with the potential to destroy your system, and it should almost never be used.** Please also see man apt-get for more information.

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Only CentOS 7 uses Linux 3.10, all other OSs have more recent kernels

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

This was introduced in ef7f5edb
obsoletes=0 is not present in the official repo config
https://download.docker.com/linux/centos/docker-ce.repo


so it might not be needed for some time

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

By removing ancient version we don't need arch specific vars

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

no_proxy is a pain to get right, and having proxy variables present causes issues
(k8s components get proxy configuration after upgrade, see #7100)

It's better to only configure what require proxy:
- the runtime (containerd/docker/crio)
- the package manager + apt_key
- the download tasks

Tested with the following clusters
- 4 CentOS 8 nodes
- 1 Ubuntu 20.04 node

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

All packages have proper dependencies in latest versions

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Upgrading docker / containerd without adapting the configuration might break the node,
so disable docker-ce repo by default.
We are already using dpkg hold for Debian.

All containerd.io packages provide /usr/bin/runc, so no need to check

yum_conf was never used for containerd

module_hotfixes should not be needed with the EL8 repo

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

This will make sure an upgrade doesn't upgrade the docker cli.

* Ensure libseccomp is installed before starting containerd on CentOS 8

* Simplify libseccomp install on CentOS 8

- Uses `package` module
- Replaces complex version check with 'state: latest'. The version must
  be > 2.3 when using with cri-o.
- Removes unnecessary `not is_ostree` condition as CentOS 8 does not use
  ostree

This fixes the Containerd + EL8 case that was missed in 7d1ab337

On CentOS 8 with proxy ansible render inline `proxy` and `module_hotfixes` options.

For example:
```
proxy=http://127.0.0.1:3128module_hotfixes=True
```

But expected result:
```
proxy=http://127.0.0.1:3128


module_hotfixes=True
```

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>