cron fix

Change-Id: I896970d593055fe06e997c63c3d7501c4b5d8cb1
diff --git a/xtrabackup/client.sls b/xtrabackup/client.sls
index cc7f492..f43da4f 100644
--- a/xtrabackup/client.sls
+++ b/xtrabackup/client.sls
@@ -51,6 +51,7 @@
   - minute: {{ client.backup_times.minute }}
 {%- endif %}
 {%- elif client.hours_before_incr is defined %}
+  - minute: 0
 {%- if client.hours_before_incr <= 23 and client.hours_before_incr > 1 %}
   - hour: '*/{{ client.hours_before_incr }}'
 {%- elif not client.hours_before_incr <= 1 %}