Remaned openstack_handle.rb

renamed:    openstack_handle.rb -> openstack_handle/handle.rb
Updated openstack_handle/handle.rb
Added new openstack_handle.rb
Remainder of changes.
Changes based on code review comments.
Fixes for spec tests.
Removed accidentally entered string on AE method screen.
Removed the explicit setting of :allow_unused_http_interactions in spec tests.
Merge pull request #286 from h-kataria/removed_accidentally_entered_string

Removed accidentally entered string on AE method screen.
Merge pull request #232 from roliveri/tenant_fix

OpenStack - Ensure inventory is collected for all tenants.
VM Datastores: fix hover text

https://bugzilla.redhat.com/show_bug.cgi?id=1114706
Merge pull request #292 from mzazrivec/vm_datastores_fix_hover_text

Fix hover text for datastores in VM's overview
Manageiq domain cleanup.

Remove unused lifecycle/discovery instances.
Remove extra best_fit methods and instances.
Modified cloud profile class schema to remove infra placement.
Modified cloud customizerequest method to be placeholder.
Modified cloud preprovision method to be placeholder.
Removed unused cloud provisioning vmprovision_template class.
Modified cloud vm provisioning statemachine to remove unused states.
Modified cloud vm retirement statemachine to remove unused states.
Modified cloud vm retirement statemachine method for new format.
Modified infra profile class schema to remove cloud availability_zone.
Modified service state machine to add addl pre and post states,
adjust field priority and messaging accordingly.
Remove placement instances/methods that belong in redhat domain and
rename remaining instances and methods to be vendor specific.
Modified infra profile class schema for best_fit changes.