[zanata/zanata-platform] 03f3b7: chore(Jenkinsfile): handle missing LABEL param

[GitHub]

  Branch: refs/heads/update-Jenkinsfile
  Home:   https://github.com/zanata/zanata-platform
  Commit: 03f3b708e80f4921cdd87823fba7ef5a9255ad2b
      https://github.com/zanata/zanata-platform/commit/03f3b708e80f4921cdd87823fba7ef5a9255ad2b
  Author: Sean Flanigan <sflaniga at redhat.com>
  Date:   2017-04-10 (Mon, 10 Apr 2017)

  Changed paths:
    M Jenkinsfile

  Log Message:
  -----------
  chore(Jenkinsfile): handle missing LABEL param