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

This fixes markdownlint failures under roles/

This fixes markdown failures on contrib/terraform.

* [terraform/aws] Fix Terraform >=0.13 warnings

Terraform >=0.13 gives the following warning:

```
Warning: Interpolation-only expressions are deprecated
```

The fix was tested as follows:
```
rm -rf .terraform && terraform0.12.26 init && terraform0.12.26 validate
rm -rf .terraform && terraform0.13.5 init && terraform0.13.5 validate
rm -rf .terraform && terraform0.14.3 init && terraform0.14.3 validate
```
which gave no errors nor warnings.

* [terraform/openstack] Fixes for Terraform >=0.13

Terraform >=0.13 gives the following error:
```
Error: Failed to install providers
Could not find required providers, but found possible alternatives:
  hashicorp/openstack -> terraform-provider-openstack/openstack
```

This patch fixes these errors.

This fix was tested as follows:
```
rm -rf .terraform && terraform0.12.26 init && terraform0.12.26 validate
rm -rf .terraform && terraform0.13.5 init && terraform0.13.5 validate
rm -rf .terraform && terraform0.14.3 init && terraform0.14.3 validate
```
which gave no errors nor warnings for Terraform 0.13.5 and Terraform
0.14.3. Unfortunately, 0.12.x gives a harmless warning, but
with 0.14.3 out the door, I guess we need to move on.

* [terraform/packet] Fixes for Terraform >=0.13

This fix was tested as follows:
```
export PACKET_AUTH_TOKEN=blah-blah
rm -rf .terraform && terraform0.12.26 init && terraform0.12.26 validate
rm -rf .terraform && terraform0.13.5 init && terraform0.13.5 validate
rm -rf .terraform && terraform0.14.3 init && terraform0.14.3 validate
```

Errors are gone, but warnings still remain. It is impossible to please
all three versions of Terraform.

* Add tests for Terraform >=0.13

This fixes markdownlint failures under contrib/network-storage and
contrib/vault.

Now markdownlint covers ./README.md and md files under ./docs only.
However we have a lot of md files under different directories also.
This enables markdownlint for other md files also.

If a branch name contains '.sh', current shellcheck checks the branch
file under .git/ and outputs error because the format is not shell
script one.
This makes shellcheck exclude files under .git/ to avoid this issue.

Signed-off-by: Kuralamudhan Ramakrishnan <kuralamudhan.ramakrishnan@intel.com>

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Fix kube-proxy removal

* Fix unwanted skipped task for kube-proxy
* Fix kube_proxy_remove default

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Add test for kube-router svc proxy

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* add strategy mitogen_linear when installed mitogen

* add small docs

Rename playbook file

The raw action executes as a regular Mitogen connection, which requires Python on the target, so add strategy: linear to bootstrap-os role playbook.

* add mitogen to  CI test
fix typo

* enable mitogen test on deploy-part1 tests
change version from master to release
download tar.gz archive

* run all CI tests with mitogen

* disable mitogen with upgrade CI tests

* enable mitogen on CI tests via env vars

* disable mitogen on CI test by default, enable on some different OS

* disable mitogen CI test on centos8
(get error  /usr/bin/python: No such file or directory)