BUG-17129 slider tests timing out, -switching to seconds. This patch is BROKEN 
BUG-17129: name the funtest thread "JUnit"
BUG-17129 : test timeouts. Make timeout params instance-specific, fetch from slider-test.xml with override from system properties if given. Public config values are all in seconds. 
BUG-17129 : test timeouts. change name of default values to make clear they are in seconds
BUG-17129 : functional tests switch to seconds with ability of sysprops to override
Merge branch 'feature/BUG-17129_slider_tests_timing_out,_surefire_JVM_being_killed' into develop
Merge branch 'develop' of github.com:hortonworks/slider into develop