change dataSource to datasource

[warisniz02]

The lb4 discoverer names the argument to pass datasource as "dataSource". This PR makes the argument consistent with the lb4 datasource without breaking existing cli command 'lb4 dataSource'.

Checklist

• [x] DCO (Developer Certificate of Origin) signed in all commits
• [x] npm test passes on your machine
• [x] New tests added or existing tests modified to cover all changes
• [x] Code conforms with the style guide
• [ ] API Documentation in code was updated
• [ ] Documentation in /docs/site was updated
• [ ] Affected artifact templates in packages/cli were updated
• [ ] Affected example projects in examples/* were updated

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[coveralls]

Pull Request Test Coverage Report for Build 8738018459

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 55.371%

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Totals
Change from base Build 8721360373:	0.0%
Covered Lines:	9563
Relevant Lines:	12457

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💛 - Coveralls

[warisniz02]

@dhmlau please have a look at my PR.

[warisniz02]

Hello @samarpanB. Can you please have a look at this PR?

[warisniz02]

@samarpanB please have a look at my PR!

[samarpanB]

one of the test case is failing

[warisniz02]

@samarpanB, this test case fails in every PR. This PR is to fix this issue( https://github.com/loopbackio/loopback-next/pull/10634)

[dhmlau]

There seems to be some issue with the setup-node GH action, and not related to the changes introduced in this PR. So I'm going to merge this PR.

[dhmlau]

@warisniz02, thanks for your contribution. Your PR has been merged! 🎉