Fix env.spec.ts test

[lym953]

What does this PR do?

Loosen the check in the test env.spec.ts so it can pass on my machine.

Before, the tests require that the params fetched by getConfigFromCfnParams() exactly match the expected dict. I changed it to require the params fetched be a superset of the expected dict.

Motivation

When I run npm test on my machine, a few tests in env.spec.ts fail because the config retrieved has some extra fields than expected, such as apiKey. This is just because I have DD_API_KEY set on my machine using export DD_API_KEY=xxx, and probably it was not set on the test author's machine when she wrote this test. I think we should loosen the check so this difference won't be treated as a failure.

Testing Guidelines

Run npm test. The tests changed from failing to passing.

Additional Notes

Types of changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
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