Flaw in kea-admin util scripts for PostgreSQL

Customer states:

There's an issue in the bundled kea-admin utility functions script, share/kea/scripts/admin-utils.sh for the pgsql_execute() and pgsql_execute_script() funcs the $db_host param is not used, 'localhost' has been hardcoded. This is not the case for MySQL and it prevents the kea-admin utility being used when connections to kea's database are not over the localhost socket.

kea-1.5.0-ticket14017.patch