CLOUDSTACK-4204:[Object_store_refactor] Snapshot created from volume in
zone2 is copying to secondary staging storages in zone1
CLOUDSTACK-4204: return a ZoneScope in picking cache storage.
CLOUDSTACK-4167: Put in upgrade paths in master for 4.1.2 and 4.2

Description:

    Define upgrade paths from 4.1.0 to 4.1.1, and 4.1.1 to 4.1.2,
    and 4.1.2 to 4.2.0. This new path will replace the existing
    4.1.0 to 4.2.0 path. This is required to allow upgrades from
    4.1.2 installations to 4.2.0. The 4.1.2 installation will have
    that db version upon installation from the 4.1 branch. Please
    note that these new upgrade paths are empty and don't make
    any SQL schema modifications.
CLOUDSTACK-3609: ASF 4.1 to 4.2 Upgrade: Invalid Global Configuration parameters are present on the Upgraded Setup

Description:

    Remove unused global config parameters from database after
    upgrade from 4.1.0/4.1.1/4.1.2 to 4.2.0.