e2elive.py is hard to use

[winder]

• docker-compose is contained, but takes a long time (10-15 minutes before the test even runs).

Make it easier to run locally. (so that it's easier to get log messages).

• Make it harder to use the wrong algod binaries.
• Make it harder to use stale data directories.
• Documentation improvements

Acceptance critera

It is now easy to run e2elive.py locally:

• Add error message when running e2elive.py to avoid running with the wrong configuration.
  • check if the installed version of goal is older than the submodule version.
    • look up commit hash in goal -v, use git to see if the submodule's commit is behind.
• Helper documentation for creating a postgres docker container.
• Document the process for running the whole thing locally.