This patch removes AuxAddresses in IPv4Data and IPv6Data in the request
against /NetworkDriver.CreateNetwork. It can not be given if it's not
specified by the CLI rather than it's set to an empty JSON object.
Change-Id: I5a36fa78adee09d91c19d533bfcf660109a0ec21
Signed-off-by: Taku Fukushima <f.tac.mac@gmail.com>
Closes-Bug: #1519260