[#1455] cli: Handle missing home directory

go-homedir library incorrectly handles some of the errors
that could occur. It is archived, so no PR, but let's fix it on our
side. The scenario in case: executing command in an empty environment.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

cmd/frostfs-cli/modules/root.go

@@ -114,13 +114,15 @@ func initConfig() {
 	} else {
 		// Find home directory.
 		home, err := homedir.Dir()
-		commonCmd.ExitOnErr(rootCmd, "", err)
-
+		if err != nil {
+			common.PrintVerbose(rootCmd, "Get homedir: %s", err)
+		} else {
 			// Search config in `$HOME/.config/frostfs-cli/` with name "config.yaml"
 			viper.AddConfigPath(filepath.Join(home, ".config", "frostfs-cli"))
 			viper.SetConfigName("config")
 			viper.SetConfigType("yaml")
 		}
+	}
 
 	viper.SetEnvPrefix(envPrefix)
 	viper.AutomaticEnv() // read in environment variables that match