Update FSF address in LGPL notices in bugtool plugins.

Update FSF address in LGPL notices in bugtool plugins.

This quiets the rpmlint errors:
 E: incorrect-fsf-address /etc/openvswitch/bugtool-plugins/system-configuration/openvswitch.xml
 E: incorrect-fsf-address /etc/openvswitch/bugtool-plugins/system-logs/openvswitch.xml
 E: incorrect-fsf-address /etc/openvswitch/bugtool-plugins/system-configuration.xml
 E: incorrect-fsf-address /etc/openvswitch/bugtool-plugins/network-status/openvswitch.xml
 E: incorrect-fsf-address /etc/openvswitch/bugtool-plugins/kernel-info/openvswitch.xml

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Ben Pfaff <blp@nicira.com>