SERVER-14626 Add method that gets the number of votes needed to win an election to ReplicaSetConfig.
SERVER-14625 fix index bounds issue for negation inside elemMatch
Revert "SERVER-13681: Remove lock that was an incorrect workaround for Azure Drive write size limitations."

This reverts commit 78c068e5d63d77648954252a785b3673d6e314b7.
Merge remote-tracking branch 'upstream/master'