SERVER-13641 Plumb OperationContext through to getCollection and all Helpers
SERVER-13641 Stop making a new OperationContextImpl in Database::getFileFormat
SERVER-14092 ignore local.replset.minvalid in upgradeChecker
SERVER-13627 disallow 0-vote arbiters
SERVER-7596 Basic support for SCRAM-SHA1 using Cyrus SASL
SERVER-14077 if awaitReplication() sees a newer configVersion, reobtain master
SERVER-14062 Move most non-global curop access through OperationContext
SERVER-13575 log rollback operation progress every 10 seconds

also stop double counting deletes from non-capped collections
SERVER-13960 bug fixes for OR with inexact predicates
Revert "SERVER-13627 disallow 0-vote arbiters"

This reverts commit 07838d04bece908d12d7f0ded46a0a75ff77608f.
SERVER-14080 Have migration result reported in the changelog correctly

Signed-off-by: Benety Goh <benety@mongodb.com>