Add support for wss via sslEngineConfigurator

[sreeraaman]

The RemoteP2P module currently instantiates the websocket client via the following:

ClientManager client = ClientManager.createClient();

However, if a custom ssl context has to be created, we need to add a client property as follows:

client.getProperties().put("org.glassfish.tyrus.client.sslEngineConfigurator",
sslEngineConfigurator);

The sslengineconfigurator is configured as follows. This is typically done by the application Instantiating the RemoteP2PModule.

System.getProperties().put(SSLContextConfigurator.TRUST_STORE_FILE, trustStoreLocation);
System.getProperties().put(SSLContextConfigurator.TRUST_STORE_PASSWORD, "xxx");
final SSLContextConfigurator defaultConfig = new SSLContextConfigurator();

    defaultConfig.retrieve(System.getProperties());
    SSLEngineConfigurator sslEngineConfigurator = new SSLEngineConfigurator(defaultConfig, true, false,
            false);

Add a new constructor to the RemoteP2PModule as follows:

public RemoteP2PModule(URI baseURI,SSLEngineConfigurator configurator) {
this.baseServerUri = baseURI;
this.sslEngineConfigurator = configurator;
}

Add an instance variable as below:

SSLEngineConfigurator sslEngineConfigurator;

[krusche]

Can you provide a pull request with these changes?
I think both should be possible, ws and wss