BE: Add database column for proxying self-managed instances
In #321401 (closed) we did investigation and created a prototype for a proxy of the Atlassian connect app that could be used to configure self-managed GitLab instances.
This issue is to implement the database changes described here: #321401 (closed)
Specifically:
In order to use gitlab.com as a proxy for self-managed instances, we need to know the instance URL. Therefor we need a new column
instance_url
on jira_connect_installations.