[qtmultimedia] Remove workaround for resolved gstreamer bug.

Reloading the capture pipeline before recording is unnecessary and
introduces a big pause.  Don't do it.
[packaging] Add qt5-qtmultimedia-plugin-audio-pulseaudio package.
[qtmultimedia] Enable gstphotography interfaces in the config test passes.
Merge pull request #5 from adenexter/camera

Enable flash, focus etc configuration and package pulseaudio plugin.