unity7 plug needs to be updated to allow menus export

[Sebastien Bacher]

The current unity7 security plug currently doesn't allow menu exports over dbus, that's needed to have them displayed in unity

[Jamie Strandboge (jdstrand)]

FYI, this is the policy that is queued:

# gmenu
dbus (send)
    bus=session
    interface=org.gtk.Actions
    path={/org/gtk/Application/anonymous{,/**},/com/canonical/unity/gtk/window/[0-9]*}
    member=Changed
    peer=(label=unconfined),

dbus (receive)
    bus=session
    interface=org.gtk.Actions
    path={/org/gtk/Application/anonymous{,/**},/com/canonical/unity/gtk/window/[0-9]*}
    member={Activate,DescribeAll}
    peer=(label=unconfined),

dbus (receive)
    bus=session
    interface=org.gtk.Menus
    path={/org/gtk/Application/anonymous{,/**},/com/canonical/unity/gtk/window/[0-9]*}
    member={Start,End}
    peer=(label=unconfined),

dbus (receive,send)
    bus=session
    interface=org.gtk.Menus
    path={/org/gtk/Application/anonymous{,/**},/com/canonical/unity/gtk/window/[0-9]*}
    member=Changed
    peer=(label=unconfined),

[Jamie Strandboge (jdstrand)]

Fixed in https://github.com/ubuntu-core/snappy/pull/1097

[Tyler Hicks (tyhicks)]

@jamie Isn't AppMenu API access needed for global menu access? Snippet from the ubuntu-unity7-base abstraction:

  #
  # Allow access for connecting to/communication with the appmenu
  #
  # dbusmenu
  dbus (send)
       bus=session
       interface="com.canonical.AppMenu.*",
  dbus (receive, send)
        bus=session
        path=/com/canonical/menu/**,

[Jamie Strandboge (jdstrand)]

@Tyler, yes, that sounds right-- the commit is for non-global dbus menu (but not com.canonical.dbusmenu). Basically there are 3 things that are needed:
1. what was committed
2. AppMenu
3. com.canonical.dbusmenu (old)

'3' is being tracked in another bug. '2' should be a new bug at this point since 2.0.3 should have '1' which was tacked by this bug.

[Jamie Strandboge (jdstrand)]

AppMenu is being tracked in https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1581191

[Jamie Strandboge (jdstrand)]

org.gtk.Menus was fixed in 2.0.3, now in xenial-updates.

[Jamie Strandboge (jdstrand)]

Tyler, you mentioned AppMenu was needed for global menus-- I can say that the changes in 2.0.3 allow the gnome-calculator-app to use the global menu gust fine. AppMenu is still planned in bug #1581191, but I need to find another consumer.

[Martin Pitt (pitti)]

The xenial-proposed in the SRU queue has some issues:

 - Broken bug ref syntax in changelog (Closes: LP:#1576287), this does not get recognized by dpkg and LP
 - #1576287 is allegedly already fixed in xenial (2.0.3), so changelog should either not mention it, or the bug reopened
 - upload 2.0.4 to yakkety first
 - Please add SRU info to the referenced bugs (testing, regression potential)