module: Obsolete dcache-server to make dcache package directly releasabl...

...e to EMI, EGI*

Obsolete dcache-server to make dcache package directly releasable to EMI, EGI*

This patch in master has the same purpose:
ae694c2329c11092d5d5f3d83a7fbff7cdb47837@master

Target: 2.6
Acked-by:Paul
Requires-notes: no
Requires-book: no