bootstrap: remove glusterfs packages

As glusterfs packages are dependencies for vdsm-gluster package,
having these in bootstrap is redundant

Change-Id: I5bdde338599155df43af3a0fd0d14a02e3bddda8
Signed-off-by: Bala.FA <barumuga@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/9076
Reviewed-by: Alon Bar-Lev <alonbl@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>