LP#1588948 Propagate authority->bib edit[or|_date]

LP#1588948 Propagate authority->bib edit[or|_date]

Adds a new global flag 'ingest.disable_authority_auto_update_bib_meta',
which is disabled by default.

When disabled, the 'editor' and 'edit_date' columns on bib records
updated via authority field propagation are updated to the value of the
editor on the authority record and NOW(), respectively.

When enabled, editor and edit_date are not modified.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Mike Rylander <mrylander@gmail.com>