packaging: spec: remove pre fedora-19 support

Change-Id: Ief3915f8995bcc4ca45b57609a02104019e21448
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
packaging: spec: rhel-7 support

Change-Id: I83fc8c71d115928cf9e4ac15687900b22bd1294e
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>