manager: Refactored tests. #162

Job	Run time
Check generated parser	21s
Build Prometheus for common architectures (0)	6m 46s
Build Prometheus for all architectures	0s
Build Prometheus for common architectures (1)	6m 39s
Build Prometheus for common architectures (2)	6m 41s
golangci-lint	1m 36s
Go tests	47s
More Go tests	3m 38s
Go tests with previous Go version	7m 55s
Mixins tests	2m 25s
UI tests	2m 13s
Go tests on Windows	10m 20s
codeql / Analyze (javascript)	1m 16s
fuzzing / Fuzzing	1m 25s
Report status of build Prometheus for all architectures	0s
Publish UI on npm Registry	1m 44s
Publish release artefacts	0s
Publish main branch artifacts	0s
	53m 46s

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