Add non-standard-ports preset and test

parity/cli/presets/config.non-standard-ports.toml

@@ -0,0 +1,10 @@
+# This config should be placed in following path:
+#   $HOME/Library/Application Support/io.parity.ethereum/config.toml
+
+[network]
+# Parity will listen for connections on port 30305.
+port = 30305
+
+[rpc]
+# JSON-RPC over HTTP will be accessible on port 8645.
+port = 8645

parity/cli/presets/mod.rs

@@ -18,6 +18,7 @@ pub fn preset_config_string(arg: &str) -> Result<&'static str, &str> {
     match arg.to_lowercase().as_ref() {
         "dev" => Ok(include_str!("./config.dev.toml")),
         "mining" => Ok(include_str!("./config.mining.toml")),
+        "non-standard-ports" => Ok(include_str!("./config.non-standard-ports.toml")),
         _ => Err(arg.clone())
     }
 }