Change the property name to pass selinux.

- Added the prefix 'persist.sys.' to pass selinux and to make the
  properties persistent after reboot.
- Shortened the name to fit the length to 31.
- Got together the properties in the near place.

Bug: 17491732
Change-Id: I051f1bacc51ee372806077159020600ffeb30f48
1 file changed