add s3.config to server.go

weed/command/server.go

@@ -97,6 +97,7 @@ func init() {
 	s3Options.domainName = cmdServer.Flag.String("s3.domainName", "", "suffix of the host name, {bucket}.{domainName}")
 	s3Options.tlsPrivateKey = cmdServer.Flag.String("s3.key.file", "", "path to the TLS private key file")
 	s3Options.tlsCertificate = cmdServer.Flag.String("s3.cert.file", "", "path to the TLS certificate file")
+	s3Options.config = cmdServer.Flag.String("s3.config", "", "path to the config file")
 
 }