feat: support to calculate the API coverage

[LinuxSuRen]

There are two important features in this PR. Now it could support brace expansion, and calculate the API coverage via Swagger:

atest run -p 'docs/api-testing/test-suite-{vm,resource}.yaml' --swagger-url http://172.11.0.13:32535/apidocs.json

[codacy-production]

Coverage summary from Codacy

Merging #89 (5ba30ae) into master (909341b) - See PR on Codacy

Coverage variation	Diff coverage
+0.15%	94.34%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (909341b)	1380	1292	93.62%
Head commit (5ba30ae)	1478 (+98)	1386 (+94)	93.78% (+0.15%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#89)	106	100	94.34%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

See your quality gate settings    Change summary preferences

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

No Coverage information
2.3% Duplication