Fixed assurance of presence only of necessary instances
Merge pull request #2 from CiscoSystems/newfix

Fixed assurance of presence only of necessary instances
Gitignore and use newest nova client for servers groups
Merge pull request #3 from terrrakot/newfix2

Gitignore and use newest nova client for servers groups
re-shuffle allowed ipv6 ra,address combinations for clarity
Merge branch 'master-in-use' of https://github.com/CiscoSystems/tempest into ipv6