simplified MR templates to one and added checklist

4 jobs for merge-request-templates in 34 minutes and 36 seconds (queued for 4 minutes and 46 seconds)
latest
Status Job ID Name Coverage
  Lint
passed #208037065
lint

00:04:20

 
  Test
passed #208037068
integration-tests

00:28:50

75.0%
passed #208037066
legacy-tests

00:07:22

46.5%
passed #208037067
package-tests

00:21:12

87.0%