debian/rpm: split mon/osd/mds server packages

debian/rpm: split mon/osd/mds server packages

Split up the "ceph" package into four new packages:

  1. ceph-mon
  2. ceph-osd
  3. ceph-mds (already done on Debian)
  4. ceph-base (files shared among multiple servers)

and then:

  5. Make "ceph" into a metapackage that depends on both -mon and -osd
    (and -mds, for RPMs).

To describe the outcome of this change another way:

  For RPMs:
  - "ceph-{mon,osd,mds}" Require: ceph-base.
  - "ceph" will become a metapackage that Requires: ceph-{mon,osd,mds}.

  For DEBs:
  - "ceph-{mon,osd,mds}" will Depends: ceph-base.
  - "ceph" will become a metapackage that Depends: ceph-{mon,osd}.
  - "ceph" will continue to Recommends: ceph-mds

New users should "yum install ceph-mon" or "yum install ceph-osd" (or
"apt-get install ceph-mon", etc) in order to install the exact daemons
that they need.

http://tracker.ceph.com/issues/10587 Fixes: #10587

Signed-off-by: Ken Dreyer <kdreyer@redhat.com>