GPII-308: Updating AcceptanceTests for 2nd pilots

* Adding GNOME Orca's gain and average-pitch settings
* Adding ALSA's masterVolume setting
Merge remote-tracking branch 'upstream/master' into GPII-308
GPII-308: Moving alsa settings from os_common to os_gnome NP set
GPII-308: Merging Javi's acceptance test update