rename use-api-server-cache to use-apiserver-cache in flags

Author: liangyuanpeng

docs/cli-arguments.md

@@ -54,7 +54,7 @@ Usage of ./kube-state-metrics:
       --telemetry-port int               Port to expose kube-state-metrics self metrics on. (default 8081)
       --tls-config string                Path to the TLS configuration file
       --total-shards int                 The total number of shards. Sharding is disabled when total shards is set to 1. (default 1)
-      --use-api-server-cache             Set resourceVersion=0 for ListWatch
+      --use-apiserver-cache              Sets resourceVersion=0 for ListWatch requests, using cached resources from the apiserver instead of an etcd quorum read.
   -v, --v Level                          number for the log level verbosity
       --version                          kube-state-metrics build version information
       --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging

pkg/options/options.go

@@ -80,7 +80,7 @@ func (o *Options) AddFlags() {
 		o.flags.PrintDefaults()
 	}
 
-	o.flags.BoolVarP(&o.UseAPIServerCache, "use-api-server-cache", "", false, "Set resourceVersion=0 for ListWatch")
+	o.flags.BoolVarP(&o.UseAPIServerCache, "use-apiserver-cache", "", false, "Sets resourceVersion=0 for ListWatch requests, using cached resources from the apiserver instead of an etcd quorum read.")
 	o.flags.StringVar(&o.Apiserver, "apiserver", "", `The URL of the apiserver to use as a master`)
 	o.flags.StringVar(&o.Kubeconfig, "kubeconfig", "", "Absolute path to the kubeconfig file")
 	o.flags.StringVar(&o.TLSConfig, "tls-config", "", "Path to the TLS configuration file")