CLOUDSTACK-4744: enhanced root admin API updateVolume with state/storageId parameters as a part of "Better control over first party objects" feature.
Also fixed existing bugs for the API:

* corrected action event to be VOLUME.UPDATE (was VOLUME.ATTACH)
* all parameters to update, should be optional - fixed that. If nothing is specified, the db object will remain with its original fields
Added missing license to SearchBase.java - fixed broken RAT check