Case sensitivity of Ecosystem names for API calls

[hayleycd]

While I was looking into #1635 I realized that we have not explicitly indicated the formats for the "ecosystem" parameter in the package object. I tried a sample call and got an error when I tried to use "pypi" for the ecosystem. "PyPI" however, did work. "Go" works but "go" doesn't.

I am happy to update documentation to help people choose the correct ecosystem. But should the ecosystem parameter be case sensitive at all?

[hayleycd]

package names also appear to be case sensitive

[hayleycd]

This is a potentially related discussion: #1673

It involves versions instead of package names/ecosystems but the question of how strict to be about matching is the same.

[hayleycd]

Per discussion with @oliverchang, this is behaving as intended

• We want ecosystem to be case sensitive
• We want the package and versioning to be sensitive as well because it varies among ecosystems.

I will update docs to reflect case sensitivity