[Merge] lp:~tiagosh/telephony-service/dont_reuse_qmediaplayer_instance into lp:telephony-service

[Michael Terry]

== Checklist ==

Did you perform an exploratory manual test run of the code change and any related functionality on device or emulator?
- Yes

Did CI run pass? If not, please explain why.
- Yes

Have you checked that submitter has accurately filled out the submitter checklist and has taken no shortcut?
- TBD
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https://code.launchpad.net/~tiagosh/telephony-service/dont_reuse_qmediaplayer_instance/+merge/221796
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