cluster-logging benchmarks

This suite consists of benchmarks tests for the following cluster-logging ES scenarios. Each scenario asserts recorded measurements against a selected profile from the config directory:

1. High Volume Writes: Measure QPS, p99, p50 and avg request duration for all 2xx write requests to ES cluster.
2. High Volume Reads: Measure QPS, p99, p50 and avg request duration for all 2xx read requests to ES cluster
3. High Volume Aggregate: Measure QPS, p99, p50 and avg request duration for all 2xx read requests to ES cluster.