Version 1.0.9 -> 1.1.0dev1.
Add XenServer impacts.
Merge pull request #16 from zenoss/feature/xenserver-impact

Please review branch feature/xenserver-impact
Add crucial indexing methods. Fixes last commit.
Merge branch 'develop' of https://github.com/zenoss/ZenPacks.zenoss.CloudStack into develop
Version 1.1.0dev1 -> 1.1.0.
Merge branch 'release/1.1.0'