sos: add plugins provided in newer versions
sos: add plugins provided in newer versions

3.4: introduce collectd plugin
3.5: introduce ovirt-imageio
3.2: added plugins useful in RHV 4.2:
 - firewalld
 - openvswitch

Change-Id: Id18847dda502baec2352d6596cd55214bce9fe35
Bug-Url: https://bugzilla.redhat.com/1413316
Related-To: https://bugzilla.redhat.com/1441041
Signed-off-by: Sandro Bonazzola <fcb014d63786651910af5db2ecc5316c668188ef@redhat.com>

oVirt/ovirt-log-collector,oVirt/ovirt-log-collector,oVirt/ovirt-log-collector