vdsm.spec: update python-pthreading

F19 and EL7 should require python-pthreading >= 1.0.2

Change-Id: Ie50a5b7a794b9df135478f3adace7501893d992c
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/15705
Reviewed-by: Dan Kenigsberg <danken@redhat.com>