TYRUS-339: SSL hostname verification is missing
	+ better handling of errors in JDK client (before if an error occured in connect phase, it got logged and the connect failed only after timeout elapsed)
TYRUS-346: JDK Client container violated ClientEngine SPI.
TYRUS-345: NPE is thrown, when shared container timeout property in JDK client is not set
	+ minor fixes JDK client thread pool tests