Replaced old waiting mechanism in vsphere
Fill tuples the same way as strings
Refactor chargeback tests
* Plus add one more test for duplicate description that currently fails
  due to cfme bug
Merge pull request #464 from psav/replace_vsphere_wait

Replaced old waiting mechanism in vsphere
Added keep alive for VMware Systems
Switched keep_alive from decorator to property wrapper
Merge pull request #467 from seandst/keep_alive

Switch keep_alive from decorator to property wrapper
Merge pull request #465 from weissjeffm/chargeback3

Refactor chargeback tests