[PostGIS] #4557: Change to use Jenkins Pipelines

[PostGIS]

#4557: Change to use Jenkins Pipelines
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  Reporter:  robe          |      Owner:  robe
      Type:  defect        |     Status:  new
  Priority:  medium        |  Milestone:  Website Management, Bots
 Component:  QA/buildbots  |    Version:
Resolution:                |   Keywords:  jenkins
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Changes (by strk):

 * keywords:   => jenkins
 * version:  master =>

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4557#comment:2>
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