MB-8366: Add avg disk commit time for sizing report

Change-Id: I8a2947c9a7579d0c53d39fdb2dd7b4490e2d803d
MB-8366: Add disk volume info

Change-Id: Ib7fa211d31332249ca652b04fabeb7b73346556c
MB-8650: Remove obsolete stats that are nolonger available

Change-Id: Ie4b9313336130ec5e4d62716f76978f8a5ec66c6