[zanata/zanata-scripts] ab2001: Use function failed()

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zanata/zanata-scripts
  Commit: ab200148da679043f58da6f74927800ca3dea7b1
      https://github.com/zanata/zanata-scripts/commit/ab200148da679043f58da6f74927800ca3dea7b1
  Author: Zanata Build Server <jenkins at zanata.org>
  Date:   2015-08-25 (Tue, 25 Aug 2015)

  Changed paths:
    M zanata-nexus-staging

  Log Message:
  -----------
  Use function failed()