FLAG_PRIVILEGED disappears if privileged app is updated and rebooted

Since Kitkat, an app pre-loaded under /system/priv-app/ has
FLAG_PRIVILEGED. However, if the app updated and the device
rebooted, privileged flag is unset from pkgFlags. This patch
fix issue to assign privileged flag when scanning the updated
packages.
Cherry-picked from AOSP: https://android-review.googlesource.com/#/c/79511/

Change-Id: Ic24b5882f65dabdfae9cc39da3d68661bed4fc31
Perform NTP lookup at Mobile data connections

If NITZ isn't supported by the current carrier the Android framework
relies instead on a remote NTP server to set the system clock. The
NetworkTimeUpdateService class polls for NTP time during the first 4
minutes after boot, failing to get NTP time within these minutes will
increase the polling interval to 24 hours. Hence, if a data connection
isn't activated directly after boot it can take a long time for the
system clock to be updated. To prevent this situation, NTP lookup is
scheduled as soon as a Mobile data connection has been established.

Change-Id: I046e0330147e7ace4b720a7e70f9d5047d42cfe6
framework/base: get proper obb mountpoint based on user handle

Due to invalid obb mount point, CTS test case was failing to mount
obb file at /mnt/shell/emulated/0. Added new API to support user
based mount point for obb.

Change-Id: I9f113bd98ab3a4af00dd7f788b2dc3bc45627d6c
CRs-Fixed: 587497