quay.io/kubespray/vagrant image is used for molecule_tests.
The tag was v2.17.1 on release-2.18 branch but the image
contains vagrant-2.2.15 which has a bug related to a virtual machine creation.
That caused kubespray CI failures.
This updates the image to use a newer vagrant.
* 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
