Tag tasks to quickly set crontabs

tasks/main.yml

@@ -174,3 +174,4 @@
     job='rsync -av --delete --log-file=/tmp/svnsync.log {{svnserver_master}}:/var/svn/ /var/svn >/dev/null 2>&1'
     user='sshsvn'
   when: svnserver_slave and svnserver_cron_sync.active
+  tags: 'cron'