[Merge] lp:~zhangew401/usensord/fix-lp-1433590 into lp:usensord

[Zhang Enwei]

The proposal to merge lp:~zhangew401/usensord/fix-lp-1433590 into lp:usensord has been updated.

Description changed to:

Fix lp:1433590
1. Export OtherVibrate property from com.canonical.usensord.haptic so that system settings can enable/disable it.
2. The property is saved in file, $HOME/.config/usensord/prop.json so that it will be kept after reboot and restored after factory reset.
3. Identify OSK by its apparmor and /proc/ID/exe. if it is OSK, do vibration always. If not, check the OtherVibrate property, if it is 1, then do vibration. If it is 0, don't do vibration.
4. libapparmor is linked to call aa_is_enabled().

For more details, see:
https://code.launchpad.net/~zhangew401/usensord/fix-lp-1433590/+merge/299959
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