Fix security groups for doppler

[wfernandes]

• Add UDP port 3457 to the cf-private security group
• Convert all tables from images to markdown tables

[cfdreddbot]

Hey wfernandes!

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

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. You can view the current status of your issue at: https://www.pivotaltracker.com/story/show/82685880.

[animatedmax]

Thank you, Warren.