Improve AutomationClient

Added AbstractAutomationClient#setSharedRegistryExpirationDelay(long delay) to update the default delay set to 60 seconds. Added HttpConnector#HttpConnector(HttpClient http, long httpConnectionTimeout) and HttpConnector#HttpConnector(HttpClient http, HttpContext ctx, long httpConnectionTimeout) to instantiate a new HttpConnector with an HTTP connection timeout. Added HttpAutomationClient#HttpAutomationClient(String url, long httpConnectionTimeout) and HttpAutomationClient#HttpAutomationClient(String url, long httpConnectionTimeout, long asyncAwaitTerminationTimeout) to instantiate a new HttpAutomationClient with an HTTP connection timeout and a timeout for the wiat of the asynchronous thread pool execution. Added AsyncAutomationClient#AsyncAutomationClient(String url, long asyncAwaitTerminationTimeout) and AsyncAutomationClient#AsyncAutomationClient(String url, ExecutorService executor, long asyncAwaitTerminationTimeout) for the same reason.