update metric kubernetes_build_info labels from camelCase to snake_case.

Author: RainbowMango

staging/src/k8s.io/component-base/metrics/prometheus/version/metrics.go

@@ -29,7 +29,7 @@ var (
 			Help:           "A metric with a constant '1' value labeled by major, minor, git version, git commit, git tree state, build date, Go version, and compiler from which Kubernetes was built, and platform on which it is running.",
 			StabilityLevel: metrics.ALPHA,
 		},
-		[]string{"major", "minor", "gitVersion", "gitCommit", "gitTreeState", "buildDate", "goVersion", "compiler", "platform"},
+		[]string{"major", "minor", "git_version", "git_commit", "git_tree_state", "build_date", "go_version", "compiler", "platform"},
 	)
 )
 

staging/src/k8s.io/component-base/metrics/testutil/promlint.go

@@ -47,12 +47,8 @@ var exceptionMetrics = []string{
 	"authentication_attempts",
 	"get_token_count",
 	"get_token_fail_count",
-	"kubernetes_build_info",
 	"node_collector_evictions_number",
 
-	// kube-proxy
-	"kubernetes_build_info",
-
 	// kubelet-resource-v1alpha1
 	"container_cpu_usage_seconds_total",
 	"node_cpu_usage_seconds_total",

staging/src/k8s.io/component-base/metrics/version.go

@@ -25,7 +25,7 @@ var (
 			Help:           "A metric with a constant '1' value labeled by major, minor, git version, git commit, git tree state, build date, Go version, and compiler from which Kubernetes was built, and platform on which it is running.",
 			StabilityLevel: ALPHA,
 		},
-		[]string{"major", "minor", "gitVersion", "gitCommit", "gitTreeState", "buildDate", "goVersion", "compiler", "platform"},
+		[]string{"major", "minor", "git_version", "git_commit", "git_tree_state", "build_date", "go_version", "compiler", "platform"},
 	)
 )