Fix default behavior of cassandra backup state:
- fix crontab schedule;
- do not set cassandra backup via cron by default as it should be
  explicitely configured and controlled by cluster operators via cluster model.

Change-Id: I353c1fd1a8c13e06927ab623d920e07f97b77380
Related-PROD: PROD-27054
(cherry picked from commit 35d312b3d90f639c13244bd1763da04b87e8d008)
2 files changed