added support for destructive tests

update according to comments

pick appliances from cfme_data added
Add wait_for_host_or_timeout in infra/hosts
tweak catalog pages
Merge pull request #209 from dajohnso/tweak_cats

tweak catalog pages
Merge pull request #216 from jkrocil/wait-for-host

Add wait_for_host_or_timeout in infra/hosts
Merge pull request #208 from apagac/rh_updates_workflow

added support for destructive tests