mfu branch should be updated (still same branch name, just git pull, or fresh checkout).
io500 app is updated to sc21 tag.
should NOT export DAOS_FUSE env variable.
should export a new env variable on the client env - MFU_POSIX_TS=1 (can be done with the mpirun command)
- this is an intermediate step to still support the older way of running and will not be required in future versions.
support for pool and container labels have been added (don't need to use uuids).
a new io-500 ini file that supports this new mode without dfuse, and also adds parameters for an extended io-500 run.
dfuse is still required only on the login node when running io-500 using the io-500.sh script
- it is not required though if running the binary directly.
- The run io-500 sections below has more details

Pre-requisites

DAOS - See https://docs.daos-stack.github.io/latest/admin/hardware/ for installation and setup instructions
MPI - any version / implementation
cmake 3.1+
clush - See https://clustershell.readthedocs.io/en/latest/install.html for installation
- Alternatives are possible, though examples are not provided in these instructions.

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