Switch emc config ownership

As suggested at
https://github.com/SUSE-Cloud/barclamp-cinder/pull/1#discussion-diff-14992181
i have switched owner and group for the emc volume type config file.
Merge pull request #198 from tboerger/feature/emc-owner-fix

Switch emc config ownership
Added tech preview message for equallogic
Integrated Fujitsu ETERNUS DX (fate#317486)

In order to get Fujitsu ETERNUS DX volume types working a have
integrated the configuration for it to reflect the patch included into
our SUSE packages.

This fixes the request https://fate.suse.com/317486