remove safeMode behavior in startup (#10645)

In almost all scenarios MinIO now is
mostly ready for all sub-systems
independently, safe-mode is not useful
anymore and do not serve its original
intended purpose.

allow server to be fully functional
even with config partially configured,
this is to cater for availability of actual
I/O v/s manually fixing the server.

In k8s like environments it will never make
sense to take pod into safe-mode state,
because there is no real access to perform
any remote operation on them.

cmd/metrics.go

@@ -161,7 +161,7 @@ func gatewayMetricsPrometheus(ch chan<- prometheus.Metric) {
 		return
 	}
 
-	objLayer := newObjectLayerWithoutSafeModeFn()
+	objLayer := newObjectLayerFn()
 	// Service not initialized yet
 	if objLayer == nil {
 		return
@@ -372,7 +372,7 @@ func networkMetricsPrometheus(ch chan<- prometheus.Metric) {
 // Populates prometheus with bucket usage metrics, this metrics
 // is only enabled if crawler is enabled.
 func bucketUsageMetricsPrometheus(ch chan<- prometheus.Metric) {
-	objLayer := newObjectLayerWithoutSafeModeFn()
+	objLayer := newObjectLayerFn()
 	// Service not initialized yet
 	if objLayer == nil {
 		return
@@ -435,7 +435,7 @@ func bucketUsageMetricsPrometheus(ch chan<- prometheus.Metric) {
 // collects storage metrics for MinIO server in Prometheus specific format
 // and sends to given channel
 func storageMetricsPrometheus(ch chan<- prometheus.Metric) {
-	objLayer := newObjectLayerWithoutSafeModeFn()
+	objLayer := newObjectLayerFn()
 	// Service not initialized yet
 	if objLayer == nil {
 		return