[ Enhancement ] Investigate options for how to SSH when base ssh_config cannot be modified with Include statement

[gwright99]

A new user of the tool must run their Terraform solution via a Github-managed Ubuntu runner instance. This is a different deployment pattern than how existing users have used the tool thus far (i.e. local clone and local execution).

Since the code is being executed on a remote Github-managed server, there does not appear to be the option to modify the ~/.ssh/config in the runners home directory.

To Do:

• Verify if it is truly impossible to modify the runner's ~/.ssh/config file.
• Consider an alternate null_resource entry which has the full SSH/SCP CLI commands rather than relying on the ssh_configalias (e.g.tower-dev`).