votequorum: Add ring id to poll call

If votequorum service receives incorrect (not current) ringid, call is
ignored and CS_ERR_MESSAGE_ERROR is returned.

This and previous commits makes incompatible changes in votequorum
API/ABI, so library version is increased.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>