[zanata/zanata-platform] ec33d8: GitHubCommitStatusSetter need to be inside a node

[GitHub]

  Branch: refs/heads/ZNTA-2035-GitHubReporting
  Home:   https://github.com/zanata/zanata-platform
  Commit: ec33d88bf2001e726182a0e4f79d08638cfb5a37
      https://github.com/zanata/zanata-platform/commit/ec33d88bf2001e726182a0e4f79d08638cfb5a37
  Author: Ding-Yi Chen <dchen at redhat.com>
  Date:   2017-07-28 (Fri, 28 Jul 2017)

  Changed paths:
    M Jenkinsfile

  Log Message:
  -----------
  GitHubCommitStatusSetter need to be inside a node