fix(aws-certificatemanager) export dns-validated-certificate

[spg]

Fixes an issue where the DNSValidatedCertificate class (see #1797) is not importable. Output from typescript compilation:

lib/backend-stack.ts:12:10 - error TS2305: Module '"../../../../../../Users/spgingras/myproject/src/backend/node_modules/@aws-cdk/aws-certificatemanager/lib"' has no exported member 'DNSValidatedCertificate'.

12 import { DNSValidatedCertificate } from '@aws-cdk/aws-certificatemanager';

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Pull Request Checklist

• Testing
  • Unit test added (prefer not to modify an existing test, otherwise, it's probably a breaking change)
  • CLI change?: coordinate update of integration tests with team
  • cdk-init template change?: coordinated update of integration tests with team
• Docs
  • jsdocs: All public APIs documented
  • README: README and/or documentation topic updated
• Title and Description
  • Change type: title prefixed with fix, feat will appear in changelog
  • Title: use lower-case and doesn't end with a period
  • Breaking?: last paragraph: "BREAKING CHANGE: <describe what changed + link for details>"
  • Issues: Indicate issues fixed via: "Fixes #xxx" or "Closes #xxx"
• Sensitive Modules (requires 2 PR approvers)
  • IAM Policy Document (in @aws-cdk/aws-iam)
  • EC2 Security Groups and ACLs (in @aws-cdk/aws-ec2)
  • Grant APIs (only if not based on official documentation with a reference)

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license.

[eladb]

Can you please also rename the class to DnsValidatedCertificate to conform with our naming guidelines (and since it hasn't been exported, it's not even a breaking change?)

[spg]

@eladb Sure, done in e89632f.

Also, I'm not sure what I have broken in the CodeBuild check.

[eladb]

The build issue was related to the .NET build: the access modifier of the validate method should be protected but it was public (committed a fix). This should obvsiouly have been discovered by jsii (aws/jsii#289).

[otterley]

Since the name of the class has changed, can you also update the documentation?

[spg]

@otterley sure, done in #2028