[zanata/zanata-scripts] 4cea10: Use JENKINS_HOME instead of HOME

[GitHub]

  Branch: refs/heads/ZNTA-1803-maven-release-pipeline
  Home:   https://github.com/zanata/zanata-scripts
  Commit: 4cea101d653833eee0395d2a195eca3c76995e1f
      https://github.com/zanata/zanata-scripts/commit/4cea101d653833eee0395d2a195eca3c76995e1f
  Author: Ding-Yi Chen <dchen at redhat.com>
  Date:   2018-02-14 (Wed, 14 Feb 2018)

  Changed paths:
    M jenkins/maven-Jenkinsfile

  Log Message:
  -----------
  Use JENKINS_HOME instead of HOME