Update xml

[yunhanw-google]

Problem

In order to add support for complicated type for issue 8895, we need explicitly to mark struct item as array=true for array processing inside struct, the zap has already added the support for array query and check.
We need to update xml with array for struct item

Change overview

--update xml with array for struct item
--update InterfaceType for NetworkInterfaceType struct

Testing

How was this tested? (at least one bullet point required)
Compilation and presubmit validation.

[bzbarsky-apple]

Also, are the other changes required by the ZAP update? If not, we should have one PR that does the ZAP update and minimal other changes, and a second PR for whatever changes are not related to the update.

[yunhanw-google]

Also, are the other changes required by the ZAP update? If not, we should have one PR that does the ZAP update and minimal other changes, and a second PR for whatever changes are not related to the update.
No need to update zap now, just update the PR, please take a further look, @bzbarsky-apple thanks