Unify logic for resetting properties before userspace reboot

Since I was there, added two more properties to reset, and switched
ordering of sys.init.updatable_crashing and
sys.init.updatable_crashing_process_name setprops to make sure that
process name is already set when apexd/PackageWatchdog get's notified
about sys.init.updatable_crashing.

Also fixed a typo in what HandleUserspaceReboot function.

Test: adb reboot userspace
Bug: 135984674
Change-Id: I954ec49aae0734cda1bd833ad68f386ecd808f73