tests: install missing PAM tests

'pam_change_unmounted' and 'pam_recursive' both exist and are referenced
by the test run config, but weren't being installed and so are excluded.
This gets them installed so they will run as expected.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Kay Pedersen <mail@mkwg.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes openzfs#15291

tests/zfs-tests/tests/Makefile.am

@@ -1588,7 +1588,9 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
 	functional/online_offline/setup.ksh \
 	functional/pam/cleanup.ksh \
 	functional/pam/pam_basic.ksh \
+	functional/pam/pam_change_unmounted.ksh \
 	functional/pam/pam_nounmount.ksh \
+	functional/pam/pam_recursive.ksh \
 	functional/pam/pam_short_password.ksh \
 	functional/pam/setup.ksh \
 	functional/pool_checkpoint/checkpoint_after_rewind.ksh \