[Bug 1923841] [NEW] [SRU] Increase recording quality

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[Impact]
Audio gets recorded by "arecord" has really bad sound quality when the volume is low.

[Fix]
https://github.com/alsa-project/alsa-utils/pull/69
Switch the default audio format from 8 bits to 16 bits if hardware supports it.

[Test]
1. Plug a microphone.
2. Run `arecord | aplay` and say something to the microphone.
3. Only noise can be heard.

With the fix applied, the recording is clear.

[Where problems could occur]
If there's any hardware falsely advertised to support 16 bits, this change will break them.
However, this is effectively using `arecord -f cd` or `arecord -f cdr`, so that's not likely.

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: alsa-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: oem-priority originate-from-1868034 patch sutton
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[SRU] Increase recording quality
https://bugs.launchpad.net/bugs/1923841
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