[grcinq] re-add virtualization support

$ sudo clush -l root -bw grcinq-[1-36,39-42,46-48]
Enter 'quit' to leave this interactive mode
Working with nodes: grcinq-[1-36,39-42,46-48]
clush> /opt/dell/srvadmin/bin/omconfig chassis biossetup attribute=cpuvt setting=enabled

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-1.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-1"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-10.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-10"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-11.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-11"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-12.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-12"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-13.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-13"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-14.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-14"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-15.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-15"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-16.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-16"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-17.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-17"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-18.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-18"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-19.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-19"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-2.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-2"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-20.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-20"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-21.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-21"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-22.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-22"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-23.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-23"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-24.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-24"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-25.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-25"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-26.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-26"

data/grid5000/sites/nancy/clusters/grcinq/nodes/grcinq-27.json

@@ -173,7 +173,7 @@
       "admin",
       "testing"
     ],
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "grcinq-27"