* Use object ID when detected unprocessed Resources
In the Data Collector, when detecting unprocessed resources, a Set
was built up using the resource object itself as the Set element.
Internally, Set adds this to a Hash.
We allow users to create custom resources that could contain a property
named "hash" which in turn wires up a `#hash` instance method on the
Resource. Ruby expects object's `#hash` method to return a Fixnum that
it uses internally. So if a resource had a "hash" property that returned
a String, bad things happened.
With this change, we make our own Hash and use the resource's object ID
in the key so we don't have to worry about the resource's `#hash` method
getting called and throwing an exception. I will send up a separate
change that warns users when they choose a property name that is already
an existing method name.
Fixes #5565.
Signed-off-by: Adam Leff <adam@leff.co>