Make 'info' command return dump() information

Implement info command for all UIRTSLibNodes.

Fixup UIFabricModule.info impl to not use spec dict.

Add subclass impl for UINodeACL, since it doesn't have self.rtsnode and
needs special handling.

Remove UINodeACL wwns cmd, since info does it now.

Signed-off-by: Andy Grover <agrover@redhat.com>