partman: add a new layout for ms-be @ eqiad

Instead of moving disks 13 & 14 (SSDs) to logical disks 0 & 1 (sda & sdb) and
having the rest offset by 2, make the setup as easy as an exact mapping
between PD & LD. This will hopefully help us identify disks more easily
and, in the short term, allows us to configure via megacli
-CfgEachDskRaid0 WB RA Direct CachedBadBBU -a0

Create a new profile for this, as it'd be best to not have Swift @ pmtpa
be non-homogeneous.

While at it:
  - Point ms-be30xx to ceph-ssd.cfg and make the profile referenced
    again. Useful in case we want to revive Ceph in those boxes.
  - Drop virt-raid10-cisco-ceph.cfg altogether. Unused, deprecated,
    clutter.

Change-Id: Id0df94c8e0281b59580529398ec1469a101d3ec5