charon-cmd: add an option to set a different server identity

src/charon-cmd/cmd/cmd_options.c

@@ -29,6 +29,8 @@ cmd_option_t cmd_options[CMD_OPT_COUNT] = {
 	  "DNS name or address to connect to" },
 	{ CMD_OPT_IDENTITY, "identity", required_argument, "identity",
 	  "identity the client uses for the IKE exchange" },
+	{ CMD_OPT_REMOTE_IDENTITY, "remote-identity", required_argument, "identity",
+	  "server identity to expect, defaults to host" },
 	{ CMD_OPT_CERT, "cert", required_argument, "path",
 	  "trusted certificate, for authentication or trust chain validation" },
 	{ CMD_OPT_RSA, "rsa", required_argument, "path",