redis-benchmarks-spec-builder: wrong redis dependencies building due to hdr_histogram not existing on < 6.2.X

[filipecosta90]

Traceback (most recent call last):
  File "/usr/local/bin/redis-benchmarks-spec-builder", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.6/dist-packages/redis_benchmarks_specification/__builder__/builder.py", line 129, in main
    builders_folder, conn, different_build_specs, previous_id
  File "/usr/local/lib/python3.6/dist-packages/redis_benchmarks_specification/__builder__/builder.py", line 266, in builder_process_stream
    command=build_command,
  File "/usr/local/lib/python3.6/dist-packages/docker/models/containers.py", line 841, in run
    container, exit_status, command, image, out
docker.errors.ContainerError: Command 'bash -c "make Makefile.dep  && cd ./deps && CXX=g++ CC=gcc make hdr_histogram hiredis jemalloc linenoise lua  -j && cd .. && CXX=g++ CC=gcc make redis-server  -j"' in image 'gcc:8.5.0-buster' returned non-zero exit status 2