Fix incorrect naming convention for OSTs
Fix incorrect naming convention for OSTs

We were calling them OSS nodes, which the metrics clearly are not. Renamed the whole field set as OST to avoid any confusion.

Signed-Off-By: Joe Handzik <91435a5354fd1941fa818cc717e722f572f40c0d@hpe.com>

HewlettPackard/lustre_exporter