add galera_database_backup job

Related: PROD-27547(PROD:27547)
         PROD-27557(PROD:27557)

Change-Id: I074c9e667fccae67ea2e1c7452918d7c6f258446
(cherry picked from commit f10aa0d15d5d40170c806a9058e74e1dd5d1a352)
1 file changed