Change FIO output to JSON, plus minor fixes

What's Changed

• Update fio_run to include iops in output by @malucius-rh in #29
• Update fio_run to preserve "data over time" logs by @malucius-rh in #32
• Jsonification of fio output and updates to built-in data reduction to handle it by @malucius-rh in #35
• Adding ability to handle things like LVM volumes and multipath aliases by @malucius-rh in #33

Full Changelog: v1.22...v1.30

Remove dup results

Merge pull request #27 from redhat-performance/remove_dups

Getting repeated results.  Remove results.csv at end of loop.

Add meta data.

Adding meta data to csv file.

Fixes for results and mount

Merge pull request #25 from redhat-performance/add_mnt_check

If disk is mounted, do not use.

fix pbench downloading results with use_pbench_version

v1.18

Fix down of data from pbench runs when using --use_pbench_version

Bail if disk is mounted.

v1.17

Use test tools

Results checking

Results checking

fix saving of meta data.

meta_data that the script generates was not being saved with the pbench results.

Use package_tool for package installation

Remove platform dependent operations (#20)

Installs fio using package_tool

fix only doing one disk

When we have designated the disks we are only doing 1 of them, not 1 and then max disks. grab disk is fine.