Retrieve the doppler endpoint URL from CC.

[davewalter]

We noticed that the doppler logging endpoint URL was incorrectly using the apps domain by default. This PR queries CC using the /v2/info API endpoint to determine the correct URL to use.

Signed-off-by: Zachary Gershman zgershman@pivotal.io

[cfdreddbot]

Hey davewalter!

Thanks for submitting this pull request! I'm here to inform the recipients of the pull request that you and the commit authors have already signed the CLA.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/137564887

The labels on this github issue will be updated when the story is started.

[aminjam]

Thanks @davewalter