Switch edx/configuration to a private repo

[robrap]

Do we want the edx/configuration repo to be private copy, rather than a public fork?

Arguments for:

• The repo contains 2U-specific configuration. Anything that is business-private, but not a secret, needs extra work to make it a secret.
  • This occurred one-time so far, when setting our edx-platform-private github URL: edx/configuration@a6eaeb9

Arguments against:

• This would require additional work to have jobs use tokens to reach the now-private repo, rather than having it be publicly accessible.
• For some repos and some types of github actions, it might be more expensive to run from a private repo.
• Not everyone agrees on whether we can legally switch from public to private based on licensing. Most agree that this particular repo would probably be ok.
• Regarding this repo specifically, we are trying to move off of it more and more as we complete containerization work.

In general, it seems like public forks are the simplest way to go, and should be the solution unless there is compelling reason to do otherwise.

[robrap]

[inform]

• This is temporarily a P5 so it can be reviewed, but will likely be closed.
• I added a note and link to this ticket on https://2u-internal.atlassian.net/wiki/spaces/AT/pages/958595796/Forking+repos+back+into+edx+GitHub+org.

[jristau1984]

Check this out again in a month or so, see if these scenarios have come up again. If not, this can be closed.