Ansible bugfix.

The function called for virtual resourceref selflinks was different here
and at the declaration point.  Here it was
'underscored(prop.name)_selflink', but in the other place it's
underscored(referenced_resource.name)_selflink'.  This works sometimes,
but in case of 'DiskType' vs Disk's field 'Type', it doesn't.

provider/ansible/request.rb

@@ -137,9 +137,9 @@ def request_output(prop, hash_name, module_name)
           ].join
         elsif prop.is_a?(Api::Type::ResourceRef) && \
               prop.resource_ref.virtual && prop.imports == 'selfLink'
-          func_name = Google::StringUtils.underscore("#{prop.name}_selflink")
+          func = "#{Google::StringUtils.underscore(prop.resource)}_selflink"
           [
-            "#{func_name}(#{hash_name}.get(#{quote_string(prop.out_name)}),",
+            "#{func}(#{hash_name}.get(#{quote_string(prop.out_name)}),",
             "#{module_name}.params)"
           ].join(' ')
         elsif prop.is_a?(Api::Type::Array) && \