Deleting incremental backup metadata after restore

The incremental backup was previously being unpacked in
/var/lib/mysql. This was mistakenly causing mysql to present this
folder as a database schema.

Change-Id: I22d5dbcf1e811d59bf19404ca884a09f87ca6bd0
Closes-Bug: #1334059
Fix updated timestamp for SecurityGroup model

Reasons:
 - Security group "updated" timestamp is not being
   updated when new rule appears. It still the same as "created".
 - Security group "updated" timestamp is not being
   updated when rule is being deleted.

Changes:
 - adding `save` step after security group rules creation.
 - adding `save` step after security group rules deletion.
 - adding integration test that validates that timestamp
   was changed after creation and deletion.

Change-Id: I92ee7207366511cd4bc5dff07337031faeed0182
Closes-Bug: #1325967
Change default for update_status_on_fail

Default 'update_status_on_fail' to True so that instances do not get stuck
in the BUILD state.

When this option is set, instances that remain in BUILD for longer than
the datastore's configured 'usage_timeout' will be considered failed and
moved to the ERROR state.

Closes-Bug: 1339826
Change-Id: I5f4b734830a21a1fbb6f169edb5424bac6f883cd
Enable trove to specify cinder volume_type when creating a volume

The volume_type is configurable via the trove-taskmanager.conf.
By default the volume_type is None.

Change-Id: I23dab1a6223803b03f2857842150cf1433af6ad0
Implements: blueprint cinder-volume-type
Merge "Deleting incremental backup metadata after restore"
Imported Translations from Transifex

Change-Id: I11a18399496420a1b760de0b93af80aa38b8eec0
Merge "Fix updated timestamp for SecurityGroup model"
Merge "Imported Translations from Transifex"
Merge "Enable trove to specify cinder volume_type when creating a volume"
Merge "Change default for update_status_on_fail"