ceph: pass package version to apt-get install
ceph: pass package version to apt-get install

This avoids problems when a different or newer version of the package is
already installed.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@inktank.com>

SUSE/teuthology,zhouyuan/teuthology,SUSE/teuthology,dmick/teuthology,dmick/teuthology,yghannam/teuthology,michaelsevilla/teuthology,ceph/teuthology,ktdreyer/teuthology,dreamhost/teuthology,robbat2/teuthology,ivotron/teuthology,yghannam/teuthology,t-miyamae/teuthology,ktdreyer/teuthology,ceph/teuthology,tchaikov/teuthology,SUSE/teuthology,tchaikov/teuthology,caibo2014/teuthology,michaelsevilla/teuthology,caibo2014/teuthology,t-miyamae/teuthology,ivotron/teuthology,robbat2/teuthology,dreamhost/teuthology,dmick/teuthology,zhouyuan/teuthology