Build & unit test fixup

plugins/lustre2/lustre2.go

@@ -1,5 +1,3 @@
-// +build linux
-
 /*
 Lustre 2.x telegraf plugin
 

testutil/accumulator.go

@@ -128,6 +128,7 @@ func (a *Accumulator) HasIntValue(measurement string) bool {
 	return false
 }
 
+// HasUIntValue returns true if the measurement has a UInt value
 func (a *Accumulator) HasUIntValue(measurement string) bool {
 	for _, p := range a.Points {
 		if p.Measurement == measurement {