ci: separate code-coverage and test-config-creation

[SteveLauC]

Standards checklist:

• The PR title is descriptive.
• I have read CONTRIBUTING.md

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What does this PR do

CI code-coverage is kinda useless? It makes CI fail for almost all the PRs, this PR separates code-coverage and test-config-creation so that we can disable code-coverage.

[codecov]

Codecov Report

Merging #488 (6b6e31f) into master (9cd155f) will decrease coverage by 0.15%.
The diff coverage is 2.12%.

@@            Coverage Diff            @@
##           master    #488      +/-   ##
=========================================
- Coverage    3.50%   3.36%   -0.15%     
=========================================
  Files          27      31       +4     
  Lines        3141    4194    +1053     
=========================================
+ Hits          110     141      +31     
- Misses       3031    4053    +1022     

Impacted Files	Coverage Δ
src/command.rs	0.00% <0.00%> (ø)
src/ctrlc/interrupted.rs	0.00% <ø> (ø)
src/error.rs	0.00% <0.00%> (ø)
src/execution_context.rs	0.00% <0.00%> (ø)
src/executor.rs	0.00% <0.00%> (ø)
src/main.rs	0.36% <0.00%> (-0.06%)	⬇️
src/report.rs	0.00% <0.00%> (ø)
src/runner.rs	0.00% <0.00%> (ø)
src/steps/containers.rs	0.00% <0.00%> (ø)
src/steps/emacs.rs	0.00% <0.00%> (ø)
... and 20 more