Fix config priority

[forslund]

Description

This resolves #3029 as well as a bug masking the issue by not loading remote config at startup.

How to test

• Remove all local configs setting "tts"->"module"
• Set the voice to American Male on the web
• Start Mycroft ./start-mycroft.sh all
• Wait for everything to be up
• Restart the audio service ./start-mycroft.sh audio restart
• Verify that the Mimic2 voice used
• Add config for the voice used in /etc/mycroft/mycroft.conf

  {
  "tts" {
  "module": "mimic"
  }
  }

• Restart the audio service again ./start-mycroft.sh audio restart
• Verify that the mimic voice is used

Contributor license agreement signed?

CLA [ Yes ]

[codecov-commenter]

Codecov Report

Merging #3033 (b566a55) into dev (ef56d71) will increase coverage by 0.01%. The diff coverage is 100.00%.

:exclamation: Current head b566a55 differs from pull request most recent head 70df575. Consider uploading reports for the commit 70df575 to get more accurate results

@@            Coverage Diff             @@
##              dev    #3033      +/-   ##
==========================================
+ Coverage   53.07%   53.08%   +0.01%     
==========================================
  Files         123      123              
  Lines       11187    11187              
==========================================
+ Hits         5937     5939       +2     
+ Misses       5250     5248       -2     

Impacted Files	Coverage Δ
mycroft/configuration/config.py	73.64% <100.00%> (+1.35%)	:arrow_up:
mycroft/util/log.py	91.22% <100.00%> (ø)

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[devops-mycroft]

Voight Kampff Integration Test Succeeded (Results)