Add cause information in LoggedRunnable error

[skabashnyuk]

What does this PR do?

Add cause information in case of InvocationTargetException | IllegalAccessException happened in LoggedRunnable
Example

Disconnected from the target VM, address: '127.0.0.1:52852', transport: 'socket'
2018-10-12 09:40:09,672[main]             [ERROR] [o.e.c.c.s.e.LoggedRunnable 66]       - null
java.lang.reflect.InvocationTargetException: null
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.che.commons.schedule.executor.LoggedRunnable.run(LoggedRunnable.java:58)
	at org.eclipse.che.commons.schedule.executor.LoggedRunnableTest.TestLoggedRunnable(LoggedRunnableTest.java:14)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
	at org.testng.internal.Invoker.invokeMethod(Invoker.java:696)
	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:882)
	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1189)
	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
	at org.testng.TestRunner.privateRun(TestRunner.java:767)
	at org.testng.TestRunner.run(TestRunner.java:617)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:343)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
	at org.testng.SuiteRunner.run(SuiteRunner.java:254)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
	at org.testng.TestNG.run(TestNG.java:1057)
	at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
	at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
	at org.eclipse.che.commons.schedule.executor.LoggedRunnableTest$TestObject.go(LoggedRunnableTest.java:28)
	... 29 common frames omitted
Caused by: java.lang.NullPointerException: null
	... 30 common frames omitted

What issues does this PR fix or reference?

n/a

Release Notes

n/a

Docs PR

n/a

[skabashnyuk]

ci-test

[riuvshin]

Results of automated E2E tests of Eclipse Che Multiuser on OCP:
Build details
Test report
docker image: eclipseche/che-server:11602
https://github.com/orgs/eclipse/teams/eclipse-che-qa please check this report.