[zanata/zanata-platform] 870500: Update versions-maven-plugin to 2.5

[GitHub]

  Branch: refs/heads/release
  Home:   https://github.com/zanata/zanata-platform
  Commit: 870500cbf220d232a369267f96abf9d0ac39dd72
      https://github.com/zanata/zanata-platform/commit/870500cbf220d232a369267f96abf9d0ac39dd72
  Author: Ding-Yi Chen <dchen at redhat.com>
  Date:   2018-04-26 (Thu, 26 Apr 2018)

  Changed paths:
    M parent/pom.xml

  Log Message:
  -----------
  Update versions-maven-plugin to 2.5