tree 88982fd53093c030d72b272e25cb23ff6d736693
parent 98e14b70678b68960ead41a2391c2cf446719da0
author Yatin Kumbhare <yatinkumbhare@gmail.com> 1465465326 +0530
committer Yatin Kumbhare <yatinkumbhare@gmail.com> 1465547024 +0530

Use is_valid_ipv4 from oslo.utils

In module netaddr valid_ipv4 raise exception AddrFormatError
if address is specified as empty string. Method is_valid_ipv4
catches the exception and returns boolean value. So we'd better
use it from oslo.utils.

Change-Id: I39d074f451b0e3f7b7203acf69ec4dd791e83114