Removing registry lock should not remove statuses set prior to setting it

[vohmar]

Registry lock sets 3 restrictive statuses to a domain - serverUpdateProhibited, serverTransferProhibited, serverDeleteProhibited. Unlocking a domain removes those same 3 statuses even if some of them were set on a domain prior setting the registry lock thus creating a method for registrants to remove administratively set restrictions.

Removing registry lock should affect only those statuses that were actually set on locking the domain

there is one potentially tricky scenario to handle here. Registry Lock is effective only in the presence of all three restrictive statuses. If any of them is removed by admin the domain is not considered locked any more and registrant is once again able to lock it. But in this case statuses to be removed on unlocking are the statuses set by last and prior locking actions.