[lyon] Add pdu data files

data/grid5000/sites/lyon/pdus/pdu3a.json

+{
+  "ip": "172.17.63.205",
+  "mac": "00:20:85:D7:8A:6C",
+  "model": null,
+  "ports": {
+  },
+  "type": "pdu",
+  "uid": "pdu3a",
+  "vendor": "Eaton"
+}
\ No newline at end of file

data/grid5000/sites/lyon/pdus/pdu3b.json

+{
+  "ip": "172.17.63.206",
+  "mac": "00:20:85:D7:84:EB",
+  "model": null,
+  "ports": {
+  },
+  "type": "pdu",
+  "uid": "pdu3b",
+  "vendor": "Eaton"
+}
\ No newline at end of file