Remove reusable workflow across molecule tests

[paddyroddy]

In the process of fixing things around #115, we want to use different options in the composite action related to UCL-MIRSG/.github#121 & UCL-MIRSG/.github#122. This would mean we'd need to set extra options in the reusable workflow, which will get confusing. By removing the reusable workflow, this will simplify things greatly. This will lead to more verbose code, but better in the long-term.

[paddyroddy]

@drmatthews and I worked on this one, so doesn't make sense that we review

[HChughtai]

See comment in #115 (comment) about pinning to major version of Ansible instead.

Additionally, could we specify the ansible_version in a repo or org wide variable? And then when we want to move to Ansible 10.x.x we'd only need to change in one place?

[paddyroddy]

See comment in #115 (comment) about pinning to major version of Ansible instead.

Additionally, could we specify the ansible_version in a repo or org wide variable? And then when we want to move to Ansible 10.x.x we'd only need to change in one place?

Nice idea, incoming

[paddyroddy]

I have updated the actions to use the major Ansible version. If actions pass, then assume this is good to go.

[paddyroddy]

@HChughtai the ones that are failing are due to the whole paths: mess and me updating manually pip install ansible==${{ vars.ANSIBLE_MAJOR_VERSION }}.* so they can be ignored