Halt github api throttling

[cweibel]

Changes proposed in this pull request:

• Tired of getting:

error running command: GET https://api.github.com/repos/cloudfoundry/app-autoscaler-release/releases/assets/198385215: 403 API rate limit exceeded for x.x.x.x. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.) [rate reset in 23m17s]

• Hoping this fixes it
• Part of https://github.com/cloud-gov/private/issues/618

Things to check

• For any logging statements, is there any chance that they could be logging sensitive data?
• Are log statements using a logging library with a logging level set? Setting a logging level means that log statements "below" that level will not be written to the output. For example, if the logging level is set to INFO and debugging statements are written with log.debug or similar, then they won't be written to the otput, which can prevent unintentional leaks of sensitive data.

Security considerations

None that I can think of, the check would use an authenticated token to hopefully not get throttled, the repo itself is not owned by Cloud.gov

[spgreenberg]

lgtm