[#1332] cli/playground: Add 'netmap-config' flag

Change-Id: I4342fb9a6da2a05c18ae4e0ad9f0c71550efc5ef
Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

cmd/frostfs-cli/modules/container/policy_playground.go

@@ -299,6 +299,11 @@ func (repl *policyPlaygroundREPL) run() error {
 		}
 	}
 
+	if len(viper.GetString(netmapConfigPath)) > 0 {
+		err := repl.handleLoad([]string{viper.GetString(netmapConfigPath)})
+		commonCmd.ExitOnErr(repl.cmd, "load netmap config error: %w", err)
+	}
+
 	var cfgCompleter []readline.PrefixCompleterInterface
 	var helpSubItems []readline.PrefixCompleterInterface
 
@@ -354,6 +359,14 @@ If a wallet and endpoint is provided, the initial netmap data will be loaded fro
 	},
 }
 
+const (
+	netmapConfigPath  = "netmap-config"
+	netmapConfigUsage = "Path to the netmap configuration file"
+)
+
 func initContainerPolicyPlaygroundCmd() {
 	commonflags.Init(policyPlaygroundCmd)
+	policyPlaygroundCmd.Flags().String(netmapConfigPath, "", netmapConfigUsage)
+
+	_ = viper.BindPFlag(netmapConfigPath, policyPlaygroundCmd.Flags().Lookup(netmapConfigPath))
 }