[valid:homogeneity][graffiti] Add ignore_keys to gpu_devices.nvidia[0-3].vbios_version

lib/refrepo/valid/homogeneity.rb

@@ -26,7 +26,10 @@ def global_ignore_keys
     ~network_adapters.ib1.mac
     ~network_adapters.ib2.mac
     ~network_adapters.ib3.mac
-
+    ~gpu_devices.nvidia3.vbios_version
+    ~gpu_devices.nvidia2.vbios_version
+    ~gpu_devices.nvidia1.vbios_version
+    ~gpu_devices.nvidia0.vbios_version
     ~pdu
     ~pdu.port
     ~pdu.uid