Fix network subnetting for IPv6
Merge pull request #53 from sshnaidm/master

Fix network subnetting for IPv6 and bug for network configuration
Apply IPv6 patch to devstack
Merge pull request #54 from CiscoSystems/ipv6-devstack-patch

Apply IPv6 patch to devstack
Patch devstack
Merge pull request #55 from CiscoSystems/ipv6-devstack-patch

Patch devstack
Merge branch 'master' of https://github.com/CiscoSystems/openstack-sqe into fixdetails
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