[#232] Use contract to get container info

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

cmd/http-gw/settings.go

@@ -62,6 +62,8 @@ const (
 
 	defaultMultinetFallbackDelay = 300 * time.Millisecond
 
+	defaultContainerContractName = "container.frostfs"
+
 	cfgServer      = "server"
 	cfgTLSEnabled  = "tls.enabled"
 	cfgTLSCertFile = "tls.cert_file"
@@ -197,6 +199,9 @@ const (
 	cmdConfig        = "config"
 	cmdConfigDir     = "config-dir"
 	cmdListenAddress = "listen_address"
+
+	// Contracts.
+	cfgContractsContainerName = "contracts.container.name"
 )
 
 var ignore = map[string]struct{}{
@@ -401,6 +406,9 @@ func setDefaults(v *viper.Viper, flags *pflag.FlagSet) {
 	// multinet
 	v.SetDefault(cfgMultinetFallbackDelay, defaultMultinetFallbackDelay)
 
+	// contracts
+	v.SetDefault(cfgContractsContainerName, defaultContainerContractName)
+
 	if resolveMethods, err := flags.GetStringSlice(cfgResolveOrder); err == nil {
 		v.SetDefault(cfgResolveOrder, resolveMethods)
 	}