Get quota from Cloud Provider.

def get(self):
        """Get quota from Cloud Provider."""

        # get all network quota from Cloud Provider.
        attrs = ("networks",
                 "security_groups",
                 "floating_ips",
                 "routers",
                 "internet_gateways")

        for attr in attrs:
            setattr(self, attr, eval("self.get_{}()". format(attr)))