Use properties for various userspace reboot timeouts

Test: adb reboot userspace
Bug: 146560409
Change-Id: I435e4f93a8769ff7d30cf781e0b48fa3e96121ef
Merged-In: I435e4f93a8769ff7d30cf781e0b48fa3e96121ef
(cherry picked from commit 7b41a1558d003084f201c361c8a4f12058f533a9)
2 files changed