packaging: Obsolete dcache-server to make dcache package directly releasable to EMI, EGI*

Obsolete dcache-server to make dcache package directly releasable to EMI, EGI*

Target: 2.2
Acked-by:Paul
Requires-notes: no
Requires-book: no
Merge pull request #251 from chrber/2.2

packaging: Obsolete dcache-server to make dcache package directly releas...