* upgrade ansible version

Needed for with_first_found to work correctly:
https://github.com/ansible/ansible/issues/70772 fixed in 2.16

* Remove unused google cloud cloud_playbook

* Fix dpkg_selection on non-existing packages

Needed since ansible-core>2.16, see:
https://github.com/ansible/ansible/commit/f10d11bcdc54c9b7edc0111eb38c59a88e396d0a

* ansible: upgrade to version >= 2.15.5

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

* tests: update requirements

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

* contrib/openstack: fix wrong gitignore pattern

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

* tests: add missing tzdata requirement

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

* tests: remove some molecules tests

Those doesn't work in Ansible 2.15. Ansible can't load builtin now
apparently and these tests are not worth it.

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

---------

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

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>