Merge remote-tracking branch 'couchbase/alice' into mad-hatter

* couchbase/alice:
  MB-38741: [BP] Reduce item pager sleep time from 3600s to 600s
  MB-34949: BP. StateLock is not held in all cases

Change-Id: I96f87af3ac3f925ec0e1129ec2f7d77079e3f8de

Author: daverigby