Add rake task to bump sequences for all `gitlab_ci` tables in case of rollback of CI decomposition
Some more context in #361759 (closed) and #361759 (comment 943813513) .
If we need to rollback our CI database then it is safest to increase all sequences on the CI tables so that any new records that get created never conflict with any of the created records on the CI database that has been rolled back.
This rake task should just find all gitlab_ci
tables and increase the sequence number by a configurable (argument) amount. This would likely be similar to #361603 (closed)