Make WindowingIntTest more reliable

[dguy]

No description provided.

[dguy]

Hopefully this fixes the issue. I could make it reliably fail on a slow vm and now it doesn't.

[dguy]

Failed due to a nexus issue

[dguy]

retest this please

[dguy]

More jenkins issues:

Failed to read tracking file /home/jenkins/.m2/repository/org/apache/zookeeper/zookeeper/3.4.10/_remote.repositories
java.nio.channels.FileLockInterruptionException
	at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:1092)
	at org.eclipse.aether.internal.impl.TrackingFileManager.lock(TrackingFileManager.java:203)
	at org.eclipse.aether.internal.impl.TrackingFileManager.read(TrackingFileManager.java:58)
	at org.eclipse.aether.internal.impl.EnhancedLocalRepositoryManager.readRepos(EnhancedLocalRepositoryManager.java:172)
	at org.eclipse.aether.internal.impl.EnhancedLocalRepositoryManager.find(EnhancedLocalRepositoryManager.java:92)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:337)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:294)
	at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:344)
	at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:236)
	at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:251)
	at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:258)
	at org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.addDependencySet(AddDependencySetsTask.java:156)

[dguy]

retest this please

[hjafarpour]

LGTM