Per summary, whereas one can select and bulk tag VMs, providers, etc, that option is not available in the Cloud Network page.
Ladas, can you make sure that all the appropriate networking models are taggable?
Seems like this issue was already fixed. I see that all networking entities are taggable in the table view.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2017:1367