[zanata/zanata-client] 0912cf: Install Maven 3.3.9 manually

[GitHub]

  Branch: refs/heads/ZNTA-1028-refactor-QualifiedSrcDocName
  Home:   https://github.com/zanata/zanata-client
  Commit: 0912cf533981eea88f978f7a397a235b2073fe93
      https://github.com/zanata/zanata-client/commit/0912cf533981eea88f978f7a397a235b2073fe93
  Author: Sean Flanigan <sflaniga at redhat.com>
  Date:   2016-04-14 (Thu, 14 Apr 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Install Maven 3.3.9 manually