add meta/requirements.yml; support Rocky Linux; test with ansible 2.12

add meta/requirements.yml (#231)

The storage role requires ansible.posix.mount. Add a requirement
for the ansible.posix collection.
support ansible-core 2.11 ansible-lint, ansible-test

Add support for Rocky Linux 8 (#229)

This file is a copy of RedHat_8.yml / CentOS_8.yml.

support python 39, ansible-core 2.12, ansible-plugin-scan (#234)

update tox-lsr version to 2.7.1 (#236)

update the tox-lsr version used in github actions tox CI
to 2.7.1

The only difference between this an 2.7.0 is that Ansible 2.12
is now GA.

Signed-off-by: Rich Megginson [email protected]