Index fio disk stats JSON data found fio-result.txt

[portante]

Let's consider indexing the JSON data generated by fio as stored in the fio-result.txt file for a given sample.

This should be fairly straight forward since it is already in JSON form, but we need to add the right metadata so that we can find the document algorithmically.

[ashishkamra]

Need more investigation @ndokos

[portante]

From #1905:

One can get the data, for example, via:

$ cat ./1-read-4KiB/sample1/fio-result.txt | jq -r '.jobs[].read.clat_ns.percentile."90.000000"'

[webbnh]

Just FYI, the man page for jq says it will accept a file as an input, so the cat stage of the pipeline isn't necessary....