Merge branch 'mad-hatter'

* mad-hatter:
  MB-41407: [BP] Do not use old StoredValue after soft delete
  MB-43076: [BP] Make -P optional in kv_trace_dump
  MB-41868: [BP] Add test for histogram max size issue
  MB-41867: [BP] Fix infinite loop due to HdrHistogram being reset

Change-Id: Ia0b999ac32b03177461bdf4ffaa44af4b80adb67

Author: daverigby