modify modules using Remote-Exec to use the standard method in all modules

[ocobles]

While the Metallb and CPEM addons perform kubectl command execution from a remote server, the other modules use local-exec. This can cause confusion among users, especially in configurations where different addons are enabled. While we can't offer both options for all modules, I think it's better to just leave local execution, which could even be wrapped in the future with another module to execute everything remotely.

This will generally require two options:

• users to have kubectl installed locally, as well as having the kubeconfig file locally.
• users to have terraform installed in the remote server, and clone an execute the terraform template from there