Add root cron jobs to gerrit

These were managed by puppet and got missed in the original
transition.

Change-Id: Ica1e6cf1ccbcc66e58fcb1f47748022dc03aa8b8

playbooks/roles/gerrit/tasks/main.yaml

@@ -316,6 +316,21 @@
     minute: 17
     hour: 4
 
+- name: Set up cron job to track upstream
+  cron:
+    name: track-upstream
+    job: '/usr/local/bin/track-upstream'
+    user: root
+    minute: 42
+
+- name: Set up cron job to back up gerrit db
+  cron:
+    name: gerrit-backup
+    user: root
+    hour: 0
+    minute: 0
+    job: '/usr/bin/mysqldump --defaults-file=/root/.gerrit_db.cnf --opt --ignore-table mysql.event --all-databases --single-transaction | gzip -9 > /home/gerrit2/mysql_backups/gerrit.sql.gz'
+
 # Gerrit rotates their own logs, but doesn't clean them out
 # Delete logs older than a month
 - name: Set up cron job to clean old gerrit logs