Stop Mac From Asking For SSH Password After Update to Sierra

I haven't tried this but figure it might help someone. It could also hurt, so I recommend that no one ever do this. Here's the quote from a friend:

if you are upgrading to Sierra (OS X)

and are used to only having the keychain manage your ssh passwords for you

and suddenly you are being requested a password on each git pull etc

then you can add these lines to your ssh config

AddKeysToAgent yes
  UseKeychain yes

just upgraded and I was just running into some really annoying issues till I just found that out