mds: progress/abort/pause interface for ongoing scrubs
Pull request ID:
Progress (n dentries scrubbed of m within this subtree) may be calculated based on rstats.
Abort and pause should be straightforward:
- Abort would be remove everything from the scrub stack, and set a flag so that when in flight rados ops complete we can complete the abort.
- Pause would set a flag on the scrubstack so that no new progress would be made until it was unset.