Authenticate all users with Openid Connect.
Steps:
  1. Collect an client id & secret from your openid connect server so that jenkins can authenticate against the openid connect server.
  2. Add to the authorized redirect URLs the following: ${JENKINS_ROOT_URL}/securityRealm/finishLogin so that the callback for this jenkins is green lit.
  3. Fill in the client id and secret.
  4. Determine the token and authentication url of your openid connect provider. For us it's https://[dns-name]/openid/token/ and https://[dns-name]/openid/authorize/ for google the url's are: https://accounts.google.com/o/oauth2/token and https://accounts.google.com/o/oauth2/auth - your milage may vary. This is specific to your OIC provider.
  5. Fill in the url's and give it a go. - We suggest not setting security to logged in users only until you've successfully tested the authtentication.