kernel-tools made weak dependency

tuned.spec

@@ -1,7 +1,7 @@
 Summary: A dynamic adaptive system tuning daemon
 Name: tuned
 Version: 2.8.0
-Release: 4%{?dist}
+Release: 5%{?dist}
 License: GPLv2+
 Source: https://jskarvad.fedorapeople.org/tuned/download/tuned-%{version}.tar.bz2
 URL: http://www.tuned-project.org/
@@ -11,9 +11,12 @@ Requires(post): systemd, virt-what
 Requires(preun): systemd
 Requires(postun): systemd
 Requires: python-decorator, dbus-python, pygobject3-base, python-pyudev
-Requires: virt-what, python-configobj, ethtool, gawk, kernel-tools, hdparm
+Requires: virt-what, python-configobj, ethtool, gawk, hdparm
 Requires: util-linux, python-perf, dbus, polkit, python-linux-procfs
 Requires: python-schedutils
+%if 0%{?fedora} > 22 || 0%{?rhel} > 7
+Recommends: kernel-tools
+%endif
 # patch taken from upstream (issue #59)
 Patch0: tuned-2.8.0-plugin-disk-traceback-fix.patch
 
@@ -382,6 +385,9 @@ fi
 %{_mandir}/man7/tuned-profiles-compat.7*
 
 %changelog
+* Mon Aug 21 2017 Jaroslav Škarvada <jskarvad@redhat.com> - 2.8.0-5
+- kernel-tools made weak dependency
+
 * Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 2.8.0-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild