Pass Velero server command args to the plugins

Pass Velero server command args to the plugins

Fixes #7806

Signed-off-by: Wenkai Yin(尹文开) <yinw@vmware.com>

pkg/cmd/server/plugin/plugin.go

@@ -45,6 +45,9 @@ func NewCommand(f client.Factory) *cobra.Command {
 		Hidden: true,
 		Short:  "INTERNAL COMMAND ONLY - not intended to be run directly by users",
 		Run: func(c *cobra.Command, args []string) {
+			config := pluginServer.GetConfig()
+			f.SetClientQPS(config.ClientQPS)
+			f.SetClientBurst(config.ClientBurst)
 			pluginServer = pluginServer.
 				RegisterBackupItemAction(
 					"velero.io/pv",
@@ -197,6 +200,9 @@ func NewCommand(f client.Factory) *cobra.Command {
 			}
 			pluginServer.Serve()
 		},
+		FParseErrWhitelist: cobra.FParseErrWhitelist{ // Velero.io word list : ignore
+			UnknownFlags: true,
+		},
 	}
 	pluginServer.BindFlags(c.Flags())
 	return c