Source incident template from production tracker
Pre-process it to add go template fields that can then be templated to produce incident issues that look like they do today.
This is a little brittle since the upstream template may change, but if the regexp hook locations can't be found and/or the resultant go template doesn't make use of the template vars, this shouldn't result in an error being thrown. The issue should still be created.
Related: https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/11870
Edited by Craig Furman