bugtool - Collect version information for all running Open vSwitch daemons.

bugtool - Collect version information for all running Open vSwitch daemons.

This is an improvement in {ovs|xen}-bugtool archive output to determine the
version which was running for all the OVS daemons. It is implemented as a
plugin which internally calls "ovs-appctl -t <daemon> version" command for
daemons whose pid file is present in /var/run/openvswitch directory.

Feature #10383
Signed-off-by: Arun Sharma <arun.sharma@calsoftinc.com>
[blp@nicira.com updated debian/copyright.in]
Signed-off-by: Ben Pfaff <blp@nicira.com>