fixed copy paste error
CORE-5602 Allow only 1 metadata template per data item.

Added set-template-instances and remove-data-item-template-instances functions to donkey.persistence.metadata.
Updated donkey.services.filesystem.metadata-template-avus/set-metadata-template-avus to use the new set-template-instances function.
CORE-5772: bumped the compatible database version
CORE-5772: added support for jobs containing multiple steps on different systems to the database
CORE-5772: replaced the job_step.id field with a step number field