Add password field to set user

Noticed this was missing in set user, the password from parsed
args wasn't being passed in.

Change-Id: I0eb748444b86b374265b6e1dd02f69a922a9b043
Change volume manager to volume type, unset property for type

In the unset method in volume_type, it was calling the volume
manager, instead of the volume_type.

Bug: 1203561
Change-Id: Iea1a9214db90f15815a456955040c0c5a795ff3d
Merge "Add password field to set user"
Merge "Change volume manager to volume type, unset property for type"