message: Fix readGitTag
diff: @@ -361,7 +361,7 @@ def environment() {
  def readGitTag() {
  def command = 'git describe --exact-match --tags HEAD'
  def returnStatus = sh(returnStatus: true, script: command)
  - if (returnStatus) {
  + if (returnStatus == 0) {
  def tag = sh(returnStdout: true, script: command).trim()
  return tag
  } else {
  