fw/b: Squash of app fw restriction commits

* Refactored to simplify for Q

Author: Danesh M <daneshm90@gmail.com>
Date:   Mon Feb 29 10:02:34 2016 -0800

    [2/3] NetworkManagement : Add ability to restrict app data/wifi usage

    CYAN-3976
    CRACKLING-834

    Change-Id: Iaa0483d0ad64511184f0f31d93552a93fbab6dd0

Change-Id: I24391a394b9d4e8eef6d822ca5af4f0ed6674cdd

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Author: Uldiniad <olivercscott@gmail.com>
Date:   Wed Oct 31 02:32:03 2018 +0000

    NetworkManagement : Add ability to restrict app vpn usage

    Change-Id: Ia6bd0894f3298fe6fb5cca343cbfe025e3b88ee9

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Author: Sam Mortimer <sam@mortimer.me.uk>
Date:   Thu Aug 29 17:12:58 2019 -0700

    fw/b: Use common network restrict apps method

    * These are lineage additions (that originated
      from caf).

    * addrestrictappsondata, addrestrictappsonvpn and
      addrestrictappsonwlan all do a similar thing
      (fw/b passes different interface arguments).

    * Consolidate into addrestrictappsoninterface
      (and removerestrictappsoninterface)

    * Requires corresponding system/netd change.

    Change-Id: I1f7cb568dd0415aaec880cf98ae97032ab555bd1

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Change-Id: If925f7f794d09664eac37da9478e443bce7cc496