sos: re-enable all_logs collection on sos >= 3.0

Adding back all logs collection, removed in
I47fb7817727ed88a1b9c7bb91cb5055a2e8d7565

Change-Id: I9d1f703aec6748133cf9152dc0da3b00edeb9a95
Bug-Url: https://bugzilla.redhat.com/1088172
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>