remove check media option as it will be added to linuxrc
Remove server roles (FATE#314695)

It should be replaced by roles, which have not been defined yet and
marked as future in PRD
use in SLE12 same disk proposal like in opensuse
Merge remote-tracking branch 'origin/master' into ni_control_file_modifications
release 3.1.10
Merge remote-tracking branch 'origin/master' into ni_control_file_modifications

Conflicts:
	package/yast2-installation.changes
Merge pull request #109 from yast/ni_control_file_modifications

Ni control file modifications