Consolidate queue arguments in main.

This is a no-op commit to demonstrate Gerrit workflow.

Change-Id: I3f09ccd91e4645753517fa31ca97384e7548317f

main.go

@@ -39,8 +39,9 @@ var (
 	printVersion                 = flag.Bool("version", false, "print version information")
 	configFile                   = flag.String("configFile", "prometheus.conf", "Prometheus configuration file name.")
 	metricsStoragePath           = flag.String("metricsStoragePath", "/tmp/metrics", "Base path for metrics storage.")
-	samplesQueueCapacity         = flag.Int("samplesQueueCapacity", 4096, "The size of the unwritten samples queue.")
 	concurrentRetrievalAllowance = flag.Int("concurrentRetrievalAllowance", 15, "The number of concurrent metrics retrieval requests allowed.")
+
+	samplesQueueCapacity      = flag.Int("queue.samplesCapacity", 4096, "The size of the unwritten samples queue.")
 	diskAppendQueueCapacity   = flag.Int("queue.diskAppendCapacity", 1000000, "The size of the queue for items that are pending writing to disk.")
 	memoryAppendQueueCapacity = flag.Int("queue.memoryAppendCapacity", 10000, "The size of the queue for items that are pending writing to memory.")