Encapsulate run of the tests to capture all kind of exception

[surli]

I got Repairnator crashing because of a test throwing an exception:

22:10:21.715 [pool-5-thread-1] DEBUG fr.inria.lille.repair.nopol.NoPol - statement #2
22:10:21.715 [pool-5-thread-1] DEBUG fr.inria.lille.repair.nopol.NoPol - Analysing SourceLocation com.weaverplatform.postgresql.Application:81 which is executed by 7 tests
-1072845519
22:10:21.830 [pool-5-thread-1] DEBUG fr.inria.lille.repair.nopol.NoPol - looking with class fr.inria.lille.repair.nopol.spoon.smt.ConditionalAdder
2018-03-20 17:10:22 ERROR Spark - ignite failed
java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:298)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:431)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at spark.embeddedserver.jetty.EmbeddedJettyServer.ignite(EmbeddedJettyServer.java:130)
at spark.Service.lambda$init$2(Service.java:504)
at java.lang.Thread.run(Thread.java:745)