CA-98090: (XOP-206) Block SXM when VM cannot match any bridge names on destination. 

I think we just need to revert this patch to resolve the issue raised by XOP-206.
We now intend to block SXM when VM cannot match any bridge names on the destination. 

Revert "CA-84673: Metadata import should create a network if it can't find one"

This reverts commit 99f82b7cecb961f9bf0da966a38e67bae618653b.