Broken EE master: Multiple migrations have the name ImportCommonMetricsKnative
As seen in https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/191837967, we have a broken EE because the CE and EE port used different migration numbers but the same name:
$ git grep ImportCommonMetricsKnative
db/migrate/20190326164045_import_common_metrics_knative.rb:class ImportCommonMetricsKnative < ActiveRecord::Migration[5.0]
db/migrate/20190405080345_import_common_metrics_knative.rb:class ImportCommonMetricsKnative < ActiveRecord::Migration[5.0]
These migrations are identical, so there is NO reason the EE version needs the duplicate version.
$ diff db/migrate/20190326164045_import_common_metrics_knative.rb db/migrate/20190405080345_import_common_metrics_knative.rb
$
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9959/diffs introduced the EE version of the migration.
/cc: @mikegreiling, @cab105