int votequorum_setexpected(votequorum_handle_t handle, int expected_votes);
function is used to change the expected votes in the cluster. Expected votes is used to calculate
quorum and should normally be the total number of votes that will exist when all the expected nodes
are joined. Quorum will usually be half of this (rounded up).
It is not possible to set expected votes up so that it makes the cluster inquorate using this command.
This call returns the CS_OK value if successful, otherwise an error is returned.