* Update procfs vendor to pull in github.com/prometheus/procfs/pull/165
* Update mountstats collector to use new types.
* Rollover counter automatically to avoid float64 accuracy issues.
* Update e2e test.
Signed-off-by: Ben Kochie <superq@gmail.com>
* Update vendor github.com/prometheus/procfs/...
* Refactor NFS collector
Use new procfs library to parse NFS client stats.
* Ignore nfs proc file not existing.
* Refactor with reflection to walk the structs.