[MacPorts] #56419: Stop using GitHub Services for Travis CI

[MacPorts]

#56419: Stop using GitHub Services for Travis CI
----------------------------+---------------------
 Reporter:  ryandesign      |      Owner:  admin@…
     Type:  enhancement     |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  server/hosting  |    Version:
 Keywords:                  |       Port:
----------------------------+---------------------
 https://developer.github.com/changes/2018-04-25-github-services-
 deprecation/

 We currently use GitHub Services for Travis CI.

 We also have a service I set up to test email notification to the commits
 mailing list, but it is not enabled; as I recall, we didn't like the
 format of the notifications and we couldn't customize it, so we
 implemented our own commit notification emailing system on Braeburn.

-- 
Ticket URL: <https://trac.macports.org/ticket/56419>
MacPorts <https://www.macports.org/>
Ports system for macOS