[MacPorts] #56110: Travis: skip building ports from the obsolete PortGroup

[MacPorts]

#56110: Travis: skip building ports from the obsolete PortGroup
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  Reporter:  mojca          |      Owner:  l2dy
      Type:  defect         |     Status:  new
  Priority:  Low            |  Milestone:
 Component:  buildbot/mpbb  |    Version:
Resolution:                 |   Keywords:
      Port:                 |
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Comment (by l2dy):

 > * We want Travis to **actually** build all (sub)ports modified in a PR,
 ideally in the same order as on the buildbot. Buildbot would skip building
 pre-existing archives, Travis should not.

 To be discussed in https://github.com/macports/macports-ports/pull/3353.

 > * We want Travis to fetch all dependencies (not modified in a PR) from a
 server (ideally one also providing non-distributable binaries, which is
 something you just work on, thanks a lot for that)

 We have a private package server now.

-- 
Ticket URL: <https://trac.macports.org/ticket/56110#comment:9>
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