Consider javax.net.ssl.SSLException("Connection has been shutdown") to be retriable

An SSLSocket whose remote counterpart has closed will throw

javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Software caused connection abort: socket write error

This should be considered a retriable exception, but the RETRIABLE_ERROR_MESSAGE regular expression in org.jboss.remoting.transport.MicroSocketClientInvoker doesn't match it.