* BAEL-1422: measure performance of Random and ThreadLocalRandom using JMH
* BAEL-1422: updated benchmarking examples of Random and ThreadLocalRandom to use newWorkStealingPool that leverages ForkJoinPool
* BAEL-1422: refactored benchmarking examples for comparing performance of ThreadLocalRandom and Random
- initialised the collection of Callable before running benchmarking
- removed for loop for submitting task and instead used executor.invokeAll(collection_of_callable)
* BAEL-1282: added TDD type junit tests for geospatial queries elasticsearch
