ZTS: Fix zpool_reopen_[1-5] on Fedora 35

The zpool_reopen_[1-5] tests are failing Fedora 35 with:

zpool_reopen_001_pos.ksh[64]: log_must[67]: log_pos[270]:
wait_for_resilver_end[98]: wait_for_action: line 71: func: is read only

Renaming 'func' -> 'funct' fixes the issue.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #12871

tests/zfs-tests/tests/functional/cli_root/zpool_reopen/zpool_reopen.shlib

@@ -68,11 +68,11 @@ function wait_for_action #pool timeout function
 {
 	typeset pool=$1
 	typeset -i timeout=$2
-	typeset func=$3
+	typeset funct=$3
 
 	while [ $timeout -gt 0 ]; do
 		(( --timeout ))
-		if ( $func $pool ); then
+		if ( $funct $pool ); then
 			return 0
 		fi
 		sleep 1