Jira connect fetch OAuth token from host instead of GitLab.com
The GitLab for Jira app fetches the OAuth token from GitLab.com by default. This is okay because it is supposed to be used on GitLab.com only, but it makes it harder to test in a development environment. Maybe this was introduced in !107721 (diffs).
Instead of https://gitlab.com/oauth/token
, the token should be fetched from http://127.0.0.1:300/oauth/token
or /oauth/token