rhbz1125785 - no need to check for update

when dependencies have been resolved and in cache
I don't think it's a good idea to set an eternal cache unless we can split out oss-public (includes SNAPSHOTs, might be updated) from central (no SNAPSHOTs, eligible for aggressive caching).

Otherwise it will be quite difficult to use zanata-client-ivy to test SNAPSHOTs.