Fixing Zend\Di to let it accept requesting interfacesResolution of th…

…e interface to an actual instantiable class is up to the user, but now it is possible to request an instance of an interface if the correct instantiator has been defined in Di definition configuration

src/Definition/RuntimeDefinition.php

@@ -94,7 +94,7 @@ public function hasClass($class)
             return (array_key_exists($class, $this->classes));
         }
 
-        return class_exists($class, true);
+        return class_exists($class) || interface_exists($class);
     }
 
     /**