Right now is impossible to have hot-hod client properties externalized. This would be useful when configuring the Data Index as a container and when the server needs authentication.

The proposal change is to add something like this to the RemoteCacheManager configuration:

ConfigurationBuilder b = new ConfigurationBuilder();
Properties p = new Properties();
try(Reader r = new FileReader("/path/to/hotrod-client.properties")) {
   p.load(r);
   b.withProperties(p);
}
RemoteCacheManager rcm = new RemoteCacheManager(b.build());

Also, the component should read from an external system property the path to read the hotrod-client.properties files.

This will add the possibility to have a ConfigMap with the contents of this file be mounted on container runtime.