Switch camelCase to snake_case

Change-Id: I035f1b9d2350381244ddce76fa4e0f3fa19ae225
diff --git a/tests/pillar/server_backup_times.sls b/tests/pillar/server_backup_times.sls
index 44a141b..e593291 100644
--- a/tests/pillar/server_backup_times.sls
+++ b/tests/pillar/server_backup_times.sls
@@ -5,9 +5,9 @@
     incr_before_full: 3
     backup_dir: /srv/backup
     backup_times:
-      dayOfWeek: 0
+      day_of_week: 0
 #     month: *
-#     dayOfMonth: *
+#     day_of_month: *
       hour: 4
       minute: 52
     key: