Correctly set provider for all versions of AmazonLinux

[rjd1]

… set provider on Amazon Linux

Summary

Updated conditional for $provider in params.pp to account for all versions of Amazon Linux.

Additional Context

See https://github.com/puppetlabs/puppetlabs-mysql/issues/1584

Related Issues (if any)

Mention any related issues or pull requests.

Checklist

• [ ] 🟢 Spec tests.
• [ ] 🟢 Acceptance tests.
• [x] Manually verified. (For example puppet apply)

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