qobject: Use simpler QDict/QList scalar insertion macros

qobject: Use simpler QDict/QList scalar insertion macros

We now have macros in place to make it less verbose to add a scalar
to QDict and QList, so use them.

Patch created mechanically via:
  spatch --sp-file scripts/coccinelle/qobject.cocci \
    --macro-file scripts/cocci-macro-file.h --dir . --in-place
then touched up manually to fix a couple of '?:' back to original
spacing, as well as avoiding a long line in monitor.c.

Signed-off-by: Eric Blake <[email protected]>
Reviewed-by: Markus Armbruster <[email protected]>
Message-Id: <20170427215821[email protected]>
Reviewed-by: Stefan Hajnoczi <[email protected]>
Reviewed-by: Alberto Garcia <[email protected]>
Signed-off-by: Markus Armbruster <[email protected]>