ensure that FIFS doesn't deploy on other test and main networks

Signed-off-by: VoR0220 <catalanor0220@gmail.com>

lib/modules/ens/index.js

@@ -107,7 +107,10 @@ class ENS {
             "onDeploy": ["ENSRegistry.methods.setOwner(0, FIFSRegistrar.options.address).send()"]
           }
         }
-      }
+      },
+      "ropsten": {},
+      "rinkeby": {},
+      "livenet": {}
     });
     self.embark.events.request("config:contractsFiles:add", self.embark.pathToFile('./contracts/FIFSRegistrar.sol'));
   }