tools: remove xenstore entries on vchan server closure
vchan server creates XenStore entries to advertise its event channel and
ring, but those are not removed after the server quits.
Add additional cleanup step, so those are removed, so clients do not try
to connect to a non-existing server.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Dmytro Semenets <dmytro_semenets@epam.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>