Migrate from SVN to GitLab (round 1: staging)

[regineheberlein]

What maintenance needs to be done?

The current process is described here

• Update the code to use git commands rather than SVN ones
  svn update == git pull
  svn add == git add
  svn commit == git commit and push in one operation
• Update the tests
• Update the environment variables and rails configuration
  We will still need a GITLAB_HOST or similar, but we won’t need a username or password anymore
• rename aspace_svn to aspace_git

Level of urgency

• High
• Moderate
• Low

Why is this maintenance needed?

SVN is old technology and comes with security risks.

Acceptance criteria

• the integration successfully authenticates to https://gitlab-staging.lib.princeton.edu/scua/libsvn
• it successfully pushes a snapshot from ASpace to gitlab-staging

Implementation notes, if any

See this related ops issue