Issue #2281111: Porting 'Entity is of bundle (entity_is_of_bundle)' cond...

...ition to 8.x

See: d.o issue #2281111 - https://drupal.org/node/2281111
This creates an EntityIsOfBundle condition and an associated test that checks a simulated node entity's type and bundle.
Does nothing different than the parent, thus needs to go away.