Sync RELEASE-NOTES-1.31 with REL1_31'
authorKunal Mehta <legoktm@member.fsf.org>
Mon, 4 Jun 2018 22:09:05 +0000 (15:09 -0700)
committerKrinkle <krinklemail@gmail.com>
Tue, 5 Jun 2018 01:06:56 +0000 (01:06 +0000)
commitaa01aa994c7d4777ad9881a4fa04200dba5e4703
treeded173c6f259d80ae5c001ca404346b261cdcf38
parenta4212752fa403bba4eac96c23523f0fe1079cc38
Sync RELEASE-NOTES-1.31 with REL1_31'

Follows-up 0e7353831e9, which accidentally removed the
pre-upgrade section.

Follows-up Ia4b29611ccee4acac which was landed
in master before the branch cut.

Change-Id: I2a38e79b8dbe173ff99797a87b7aa5193a03212e
RELEASE-NOTES-1.31