packaging: spec: force update of openjdk which leaks memory

this will only force upgrade if existing openjdk install is faulty

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1028966
Change-Id: Ifbc098ec79cc95783f775f856c4f4563c3f61a3b
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>