Merge "Put shell on the idle/background whitelist"

    <!-- This is a core platform component that needs to freely run in the background -->

    <allow-in-power-save package="com.android.cellbroadcastreceiver" />

    <allow-in-power-save package="com.android.shell" />

    <!-- These are the packages that are white-listed to be able to run as system user -->

    <system-user-whitelisted-app package="com.android.settings" />