removed tolerated delay - should be done as post processing on results file
removed window size from core config options - should be provided by Workload implementation
consolidated Blocking and Async OperationExecutorStreams into single OperationExecutorStream
regenerated default config files according to changes
updated tests accordingly
Merge branch 'master' into short_reads

Conflicts:
	src/main/java/com/ldbc/driver/Client.java
	src/main/java/com/ldbc/driver/runtime/executor/OperationStreamExecutorServiceThread.java
	src/main/java/com/ldbc/driver/runtime/metrics/ThreadedQueuedConcurrentMetricsService.java
	src/test/java/com/ldbc/driver/runtime/WorkloadRunnerComplexScenarioTests.java
	src/test/java/com/ldbc/driver/runtime/WorkloadRunnerTest.java
	src/test/java/com/ldbc/driver/runtime/metrics/ThreadedQueuedConcurrentMetricsServiceTest.java
	src/test/java/com/ldbc/driver/workloads/ldbc/snb/interactive/LdbcSnbInteractiveWorkloadPerformanceTest.java
	src/test/java/com/ldbc/driver/workloads/ldbc/snb/interactive/LdbcSnbInteractiveWorkloadTest.java