fedora-spec: use default tarball dirs name

The default tarball directory follows the standard.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>

rhel/openvswitch-fedora.spec.in

@@ -83,7 +83,7 @@ files needed to build an external application.
 
 
 %prep
-%setup -q -n openvswitch-%{version}
+%setup -q
 
 %build
 %configure --enable-ssl --with-pkidir=%{_sharedstatedir}/openvswitch/pki