RFR 8196324: Update FilterMatch & FilterNoMatch to use TestScaffold instead of JDIScaffold

[Paru Somashekar]

Hi,

Please review fix for JDK-8196324

The includes the following changes:

* Use startToMain method of TestScaffold that automatically calls 
connect() and waitForVMStart()
* Since TestScaffold extends TargetAdapter, it now overrides event 
callbacks directly in the test class rather than implement an anonymous 
inner class.
* Breakpoint handling is done in breakpointReached callback instead of 
waitForRequestedEvent and subsequently removing it.

Bug : https://bugs.openjdk.java.net/browse/JDK-8196324
Review : http://cr.openjdk.java.net/~psomashe/8196324/webrev/ 
<http://cr.openjdk.java.net/%7Epsomashe/8196324/webrev/>

thanks,
Paru.