!581 [sync] PR-580: switch systemd back to cgroup v1 to prevent the docker.service startup failure

From: @openeuler-sync-bot 
Reviewed-by: @overweight 
Signed-off-by: @overweight

systemd.spec

@@ -25,7 +25,7 @@
 Name:           systemd
 Url:            https://www.freedesktop.org/wiki/Software/systemd
 Version:        255
-Release:        5
+Release:        6
 License:        MIT and LGPLv2+ and GPLv2+
 Summary:        System and Service Manager
 
@@ -350,7 +350,7 @@ CONFIGURE_OPTS=(
         -Db_ndebug=false
         -Dman=enabled
         -Dversion-tag=v%{version}-%{release}
-        -Ddefault-hierarchy=unified
+        -Ddefault-hierarchy=legacy
         -Ddefault-dnssec=allow-downgrade
         # https://bugzilla.redhat.com/show_bug.cgi?id=1867830
         -Ddefault-mdns=yes
@@ -1635,6 +1635,9 @@ fi
 %{_libdir}/security/pam_systemd_loadkey.so
 
 %changelog
+* Mon Mar 18 2024 huyubiao <huyubiao@huawei.com> - 255-6
+- switch systemd back to cgroup v1 to prevent the docker.service startup failure
+
 * Fri Mar 1 2024 huyubiao <huyubiao@huawei.com> - 255-5
 - move the architecture patches after Patch9800 (excluding Patch9800)