Abhishek Raut db9ad34821 Validate L2gateway exists in backend
Before creating L2gateway, we must validate whether the bridge
cluster exists in the backend.

Change-Id: I94c435d486b1fde2432c507de7181e6cdfb94d97
2017-04-20 05:31:32 -07:00
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2017-04-20 05:31:32 -07:00