[vault] update tree version to 3

.units->.modules not managed by git

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[vault] always sync with global configuration

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
small changes in debugging/error processing

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[cli] application should process exceptions on top level

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
initialization is requested only when config is passed

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