Gary Kotton 6f7438e992 NSXV/L2GW: validate that portgroup is used only once
The NSX only allows one DLR to connect to a port group. Trying
with more than one throws an exception.

So we prevent this from happening when a L2 GW is created.

Change-Id: I9c085a9244738c09942ca6e2c7606539ab83c8b4
2017-06-14 05:03:33 -07:00
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