This patchset introduces the framework by which all OSH-based database
systems can use to backup and restore their databases. The framework
is refactored from the Postgresql backup and restore logic. This will
prevent alot of code duplication in the backup restore scripts across
each cluster.
In the process, some improvements needed to be made:
1) Removing the need for 2 separate containers to do the backup
and restore work to a remote gateway. This simplifies the design
and enables a higher level of robustness.
2) Adding separate "days to keep" config value for remote backup files,
as there may be different requirements for the remote files than the
local backup files.
3) Adding capability to send Storage_Policy when creating the remote
RGW swift container.
4) Making coding style improvement for readability and maintainability.
5) Fixing a deployment bug that occurs when remote backup is disabled.
Change-Id: I3a3482ad67320e89f04305b17da79abf7ad6eb45
5a2babd514