fix local auth message

[bkendall]

Description

Login looks like this now (with localhost):

:~ » firebase login --reauth
i  Firebase optionally collects CLI usage and error reporting information to help improve our products. Data is collected in accordance with Google's privacy policy (https://policies.google.com/privacy) and is not used to identify you.

? Allow Firebase to collect CLI usage and error reporting information? No

Visit this URL on this device to log in:
[url]

Waiting for authentication...

Scenarios Tested

login with localhost, and login --no-localhost which looks like:

:~ » firebase login --reauth --no-localhost
i  Firebase optionally collects CLI usage and error reporting information to help improve our products. Data is collected in accordance with Google's privacy policy (https://policies.google.com/privacy) and is not used to identify you.

? Allow Firebase to collect CLI usage and error reporting information? No

Visit this URL on any device to log in:
[url]

? Paste authorization code here:

Fixes #1596

[coveralls]

Coverage increased (+0.04%) to 65.088% when pulling 7fbf873 on bk-fix-login-message into 61a459c on master.