Enable iscsid on openSUSE

Services are not automatically enabled after installation on openSUSE. iscsid
is required to run for nova-baremetal.

Change-Id: I1d5431ad1ac89ead5c6a1b609a79d1491c97cf27
Fix compatibility link creation for mysql.sock on openSUSE

Create the /var/run/mysql/mysql.sock compatibility link already during the
pre-configure run. Otherwise e.g. the "reset-db" script called during the
"boot-stack" element's configure run will fail to find the mysql socket.

Change-Id: I8046f8d056e7d28e046ccfdfd22f6b73338352b6
Merge "Enable iscsid on openSUSE"
Merge "Fix compatibility link creation for mysql.sock on openSUSE"