Install zgenhostid to sbindir

zgenhostid(8) is used to modify or create /etc/hostid.  This
administrative tool is currently installed to bindir.  System utilities
are typically placed in sbin.

Modify the installation directory for zgenhostid.  Additionally, track
this change in its use in dracut and the rpm installation.

Authored-by: наб <nabijaczleweli@nabijaczleweli.xyz>
Authored-by: Antonio Russo <aerusso@aerusso.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Antonio Russo <aerusso@aerusso.net>
Closes #11485

cmd/zgenhostid/Makefile.am

@@ -1,5 +1,5 @@
 include $(top_srcdir)/config/Rules.am
 
-bin_PROGRAMS = zgenhostid
+sbin_PROGRAMS = zgenhostid
 
 zgenhostid_SOURCES = zgenhostid.c

contrib/dracut/90zfs/module-setup.sh.in

@@ -5,7 +5,7 @@ check() {
 	[ "${1}" = "-d" ] && return 0
 
 	# Verify the zfs tool chain
-	for tool in "@bindir@/zgenhostid" "@sbindir@/zpool" "@sbindir@/zfs" "@mounthelperdir@/mount.zfs" ; do
+	for tool in "@sbindir@/zgenhostid" "@sbindir@/zpool" "@sbindir@/zfs" "@mounthelperdir@/mount.zfs" ; do
 		test -x "$tool" || return 1
 	done
 	# Verify grep exists
@@ -38,7 +38,7 @@ install() {
 	inst_rules @udevruledir@/60-zvol.rules
 	dracut_install hostid
 	dracut_install grep
-	dracut_install @bindir@/zgenhostid
+	dracut_install @sbindir@/zgenhostid
 	dracut_install @sbindir@/zfs
 	dracut_install @sbindir@/zpool
 	# Workaround for https://github.com/openzfs/zfs/issues/4749 by

rpm/generic/zfs.spec.in

@@ -442,7 +442,7 @@ systemctl --system daemon-reload >/dev/null || true
 # Core utilities
 %{_sbindir}/*
 %{_bindir}/raidz_test
-%{_bindir}/zgenhostid
+%{_sbindir}/zgenhostid
 %{_bindir}/zvol_wait
 # Optional Python 2/3 scripts
 %{_bindir}/arc_summary