code: def add_new_host(self, hostname, ipv4addr, comment=None):
          
          host = Host(self.session, name=hostname)
          if host.ipv4addrs:
              host.ipv4addrs = []
          host.add_ipv4addr(ipv4addr)
          host.comment = comment
          return host.save()
docs: Add or update a host in the infoblox, overwriting any IP address
          entries.
  
          :param str hostname: Hostname to add/set
          :param str ipv4addr: IP Address to add/set
          :param str comment: The comment for the record