Since ansible 2.9 search cannot be used as filter after a pipe but after `is`

Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>

This fixes the following warning:

  [kubernetes/client : Generate admin kubeconfig with external api endpoint]
  [WARNING]: Consider using the file module with state=directory rather than
  running 'mkdir'.  If you need to use command because file is insufficient
  you can

* add support crio version for various k8s vers

* regexp in pkg versions

When clicking the link, we faced NotFound error page of the github.com.
This fixes the link to avoid that.

RedHat 8.3 merged nf_conntrack_ipv4 in nf_conntrack but still advertise 4.18
so just try to modprobe and decide depending on the success
Also nf_conntrack is a dependency of ip_vs, so no need to care about it

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

* Add etcd tls cipher suites

* yamllint

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

* add crio registry mirror support

* mdlint fix

* 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

* Fix etcd download dest

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

* Only support Helm v3, cleanup install

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

Signed-off-by: Victor Morales <v.morales@samsung.com>

* copying ssh key no longer required, works with password auth
* use copy module instead of synchronize (which requires sshpass)
* less tasks and always changed tasks

* containerd docker hub registry mirror support

* add docs

* fix typo

* fix yamllint

* fix indent in sample
and ansible-playbook param in testcases_run

* fix md

* mv common vars to tests/common/_docker_hub_registry_mirror.yml

* checkout vars to upgrade tests

If crictl (and docker) binaries are deployed to the directories
that are not in standard PATH (e.g. /usr/local/bin), it is required
to specify full path to the binaries.

The task outputs the following warning:

  TASK [kubernetes/preinstall : Enable ip forwarding]
  [WARNING]: The value 1 (type int) in a string field was converted
  to u'1' (type string). If this does not look like what you expect,
  quote the entire value to ensure it does not change.

Added "boto3" as dependency in "requirements.txt" which is required by "kubespray-aws-inventory.py".

Signed-off-by: Pratik raj <rajpratik71@gmail.com>