[tests] cutes.js test api is changed

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
[vault] no 'latest' tag

This tag is redundant because snapshot tag name is a timestamp and the
latest one can be detected easily

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
mk_snapshots tiny refactoring

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
[vault] basic snapshot removal

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
[vault] repository organization versioning

way to change/upgrade repository format if needed

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
date tag is not going to note if there is no message

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
version bump

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>