Bug#27604999 SERVICE MYSQL START HANGS WITH SLES12 REPO PACKAGES ON SLES12.0 OS

systemd service files has been converted to use Type=notify. This is
accomplished by writing to systemd notify socket. SLES before SLES
12.2 don't support this feature. Be explicit and let RPMS depend on
systemd version with feature included.

Author: trosten

packaging/rpm-sles/mysql.spec.in

@@ -217,6 +217,7 @@ Obsoletes:      mariadb-embedded-devel
 Provides:       mysql = %{version}-%{release}
 Provides:       mysql-tools = %{version}-%{release}
 %if 0%{?systemd}
+Requires:       systemd >= 228
 %{?systemd_requires}
 %else
 PreReq:         insserv