The way we do this now involves a conf change and a proxy
reload which is a pain. You can now just set these:
X-Account-Sysmeta-Global-Write-Ratelimit: WHITELIST
or
X-Account-Sysmeta-Global-Write-Ratelimit: BLACKLIST
NOTE:
The existing proxy config settings: account_whitelist
and account_blacklist will continue to work.
Change-Id: I532663f1d2c75d03170c5fdb9b330416822fbc88
172a9b369f