removed buildslave user creation and added tcwg-nvidia group

Change-Id: I8d65b11777ce021d46202fc5ef524cb7360aa007
diff --git a/hosts b/hosts
index 0976215..85698cf 100644
--- a/hosts
+++ b/hosts
@@ -116,8 +116,11 @@
 kvmdispatcher.tcwglab
 
 [tcwg-nvidia]
+tcwg-tx1-[01:03].tcwglab
+
+[llvm-nvidia]
 llvm-tk1-[01:09].tcwglab
-tcwg-tx1-[01:02].tcwglab
+
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