Use MariaDB instead of MySQL for openSUSE

MariaDB is the default of openSUSE, let's use that one.

Change-Id: I1d90f6718590ff7c030e524e61dfd111c0597e41
Added section for transferring Block Storage volumes

Block Storage volumes can now be transferred; created section in 'Manage Volumes' chapter.

Partial-Bug: #1239920

Change-Id: Ie051d1e6cbb98bb9e240b418c8dd524dbd322789
Merge "Use MariaDB instead of MySQL for openSUSE"
Merge "Added section for transferring Block Storage volumes"