Fixed eligible_resources to pass updated options when creating workflow

When placement_auto is true the workflow will not perform resource lookups
as a performance improvement for the UI.  When specifically requesting the
resources through the same methods the option needs to be forced to false.

https://bugzilla.redhat.com/show_bug.cgi?id=1123380
I really don't like stubbing the object under test here, especially since we don't have any tests for ```#eligible_resource_lookup``` or ```#workflow```. I think if tests for these methods were written I would feel better about stubbing them out. The preferable way would be to fully test them, since ```#eligible_resource_lookup``` is private, and ```#workflow``` should be private (only uses I could find were in specs, which suggests those need to be re-written as well).