Add idle state to processes test

plugins/inputs/system/processes_test.go

@@ -44,7 +44,8 @@ func TestFromPS(t *testing.T) {
 	fields["zombies"] = int64(1)
 	fields["running"] = int64(4)
 	fields["sleeping"] = int64(34)
-	fields["total"] = int64(43)
+	fields["idle"] = int64(2)
+	fields["total"] = int64(45)
 
 	acc.AssertContainsTaggedFields(t, "processes", fields, map[string]string{})
 }
@@ -172,6 +173,8 @@ U
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 `
 
 const testProcStat = `10 (rcuob/0) %s 2 0 0 0 -1 2129984 0 0 0 0 0 0 0 0 20 0 %s 0 11 0 0 18446744073709551615 0 0 0 0 0 0 0 2147483647 0 18446744073709551615 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0