Fix debian stretch building for 5.7 for systemd

Author: Vladimir Kuklin

packaging/deb-in/CMakeLists.txt

@@ -164,13 +164,17 @@ ELSEIF(DEB_CODENAME STREQUAL "stretch")
     "install -m 0755 debian/extra/mysql-systemd-start debian/tmp/usr/share/mysql/")
   SET (DEB_RULES_INSTALL_APPARMOR "")
   SET (DEB_RULES_APPARMOR_LOAD "")
+  SET (DEB_SYSTEMD_SERVICE_NAME "mysql")
   SET (DEB_RULES_SYSTEMD_ENABLE "dh_systemd_enable --name=mysql")
   SET (DEB_RULES_SYSTEMD_START "dh_systemd_start --restart-after-upgrade")
   SET (DEB_INSTALL_SERVER_SYSTEMD "usr/share/mysql/mysql-systemd-start")
   SET (DEB_INSTALL_SERVER_APPARMOR "")
   SET (DEB_SERVICE_SERVER_EXECPRE
     "ExecStartPre=/usr/share/mysql/mysql-systemd-start pre")
+  SET (DEB_SERVICE_SERVER_EXECPOST
+    "ExecStartPost=/usr/share/mysql/mysql-systemd-start post")
   SET (DEB_INIT_APPARMOR "")
+  SET (DEB_STARTUP "SYSTEMD")
 ELSEIF(DEB_CODENAME STREQUAL "precise")
   SET (DEB_PLATFORMRELEASE "ubuntu12.04")
   SET (DEB_CONTROL_BDEPS "dh-apparmor")