Fix ecotype errors

Related to bug 14613.

• Add ecotype-47 eth1 missing rate
• Add exceptions for the different firmware versions of ecotype-18.

data/grid5000/sites/nantes/clusters/ecotype/nodes/ecotype-47.json

@@ -189,6 +189,7 @@
       "mounted": false,
       "name": "eno2",
       "network_address": "ecotype-47-eth1.nantes.grid5000.fr",
+      "rate": 10000000000,
       "sriov": true,
       "sriov_totalvfs": 63,
       "switch": "ecotype-prod2",