collector/entropy_linux.go: Use canonical name for available entropy

collector/entropy_linux.go

@@ -34,7 +34,7 @@ func init() {
 func NewEntropyCollector() (Collector, error) {
 	return &entropyCollector{
 		entropy_avail: prometheus.NewDesc(
-			prometheus.BuildFQName(Namespace, "", "entropy_avail"),
+			prometheus.BuildFQName(Namespace, "", "entropy_available_bits"),
 			"Bits of available entropy.",
 			nil, nil,
 		),

collector/fixtures/e2e-output.txt

@@ -362,9 +362,9 @@ node_disk_writes_merged{device="mmcblk0p2"} 0
 node_disk_writes_merged{device="sda"} 1.1134226e+07
 node_disk_writes_merged{device="sr0"} 0
 node_disk_writes_merged{device="vda"} 2.0711856e+07
-# HELP node_entropy_avail Bits of available entropy.
-# TYPE node_entropy_avail gauge
-node_entropy_avail 1337
+# HELP node_entropy_available_bits Bits of available entropy.
+# TYPE node_entropy_available_bits gauge
+node_entropy_available_bits 1337
 # HELP node_exporter_scrape_duration_seconds node_exporter: Duration of a scrape job.
 # TYPE node_exporter_scrape_duration_seconds summary
 node_exporter_scrape_duration_seconds{collector="bonding",result="success",quantile="0.5"} 7.481600000000001e-05