Configures the trust store. The attributes are: * path: The location (which will be resolved relative to the current classpath and file system, if possible) of the trust store that contains public certificates of trusted servers * storePassword: The password used to protect the trust store * class: The type of trust store used (a Java class name) * algorithm: The algorithm used by the trust store * factory-ref: Reference to the trust manager factory * explicitOnly: Whether this is an explicit trust store * requireClientAuthentication: Whether client authentication is required