ZTS: Add additional exceptions

The following tests have been observed to occasionally fail when
running under the CI. Updated our exceptions list to track them.

Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #16553