There are some different changes in standalone.xml between
Zanata version 3 and 4. A version flag is implemented to
rollout the right version from template dir. For backwards
compatibility Zanata version 3 and 4 are supported yet.
Wildfly 9 stuff is removed because we have still Wildfly 10
running. That simplifies the manifest. Switch download URLs
to github, so there is also a standard to fetch files.
Change-Id: I5ada09cad7a19296802b22c2c3488ca547f2f14e
hint: http://docs.zanata.org/en/release/release-notes/#400
e1fb24b955