Issue 1362 - createNightlies script should call ensure_dependencies

--HG--
extra : rebase_source : b74d7a6c2c4f2084bdb0d169a1b5add18404f848
extra : histedit_source : 6b9fba91cd334bb45ee8399e4c3ed5bbca966c18%2Cb1909478f11f6cc05828156fbec32c67ce0ded93