Bug 17513: Create GRANT for user@localhost in koha-create

Bug 17513: Create GRANT for user@localhost in koha-create

See the bug description for the details.

Test plan:
Use this script to create a new koha installation, using MariaDB
You should not display
"user koha_kohadev doesn't have enough privilege on database koha_kohadev "

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Confirm that this still works (with MySQL).

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>