Documentation Suggestion to alert folks to git pull terraform apply

[prb112]

Working with a colleague, I ran into an out-of-date branch on the person's system. This lead to repeated deployment failures. A small Suggestion to add a warning to pull latest before executing a terraform apply.

[yussufsh]

IMO this should be a practice to check the latest code when user is facing some issue with existing code. Usually a user will run a terraform apply command where adding a message on top of the run is not possible.
We can add this statement to the doc or try other ways by using GitHub providers which can be tedious.
Also I want to mention folks to use https://github.com/ocp-power-automation/openshift-install-power/ instead where there is version check for the script and a single command would get the latest automation code.

If you have any other ideas then a PR is welcome.

[prb112]

While a best practice, I think it's fine to leave as-is.