Add way to change logrotate scheduling

This patch adding way to change schedule
for logrotate.

Depends-On: https://review.opendev.org/c/openstack/kolla/+/813008
Change-Id: I033c51704bfb806f6515db26b8159fae12469ba5

ansible/roles/common/defaults/main.yml

@@ -30,6 +30,7 @@ common_services:
     image: "{{ cron_image_full }}"
     environment:
       DUMMY_ENVIRONMENT: kolla_useless_env
+      KOLLA_LOGROTATE_SCHEDULE: "{{ cron_logrotate_schedule }}"
     volumes: "{{ cron_default_volumes + cron_extra_volumes }}"
     dimensions: "{{ cron_dimensions }}"
 
@@ -97,6 +98,7 @@ fluentd_extra_volumes: "{{ default_extra_volumes }}"
 
 cron_logrotate_rotation_interval: "weekly"
 cron_logrotate_rotation_count: 6
+cron_logrotate_schedule: "daily"
 
 ####################
 # Fluentd

releasenotes/notes/logrotate-schedule-4d24626629311e6c.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Adds a new variable to be used by the common role,
+    ``cron_logrotate_schedule``. This allows to configure
+    how often the cron runs for logrotate.