Warn for wrong branch when staging is frozen

[ilyakatz]

ecopony [7:50 AM]
ok errybody, gonna run the new freeze bits. remember, hotfixes for staging need to be PR’d into the staging branch, not master, once we are frozen

[7:51]
:fingers_crossed:

annectobotBOT [7:51 AM]
set the channel topic: DO NOT MERGE! Staging is frozen.

kaliara [7:51 AM]
thanks for the reminder Ed!

davidray [7:52 AM]
@kofno: Do you know what time you are interviewing Nick?

annectobotBOT [7:52 AM]
set the channel topic: DO NOT MERGE! Staging is frozen.

katzmopolitan [7:53 AM]
@ecopony: maybe we can add some checks via github hook for that :evil-laugh: