ceph.spec: work around build.opensuse.org
ceph.spec: work around build.opensuse.org

The redhat-rpm-config isn't installed on build.opensuse.org, which means
the processor is set to i386 instead of something less ancient.  This
breaks compilation on 32-bit x86.

Kludge around it here.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph