Change versionStatisticCache to be eternal with overflow to disk: https://bugzilla.redhat.com/show_bug.cgi?id=1099736
Change versionStatisticCache to be eternal with overflow to disk: https://bugzilla.redhat.com/show_bug.cgi?id=1099736

zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform,zanata/zanata-platform