[ACS4.4] CLOUDSTACK-6854

[Sheng Yang]

Hi Daan,

Please cherry-pick from 4.4-forward branch:

commit dfe20f34f2e72335586b0e014ba1f91aa4ed473e
Author: Sheng Yang <sheng.y...@citrix.com>
Date:   Fri Jun 20 17:36:49 2014 -0700

    CLOUDSTACK-6854: Fix inconsistent IPv6 address formats

    fc00:0003:1373::0002 should be treated the same as fc00:3:1373::2.


Thanks!

--Sheng