Pass certificateArn to domain component

[huksley]

Currently, declared on README.md page certificateArn does not passed to domain component, resulting in searching for domain certificate, which works bad for subdomains, i.e. app.example.com

See issue here: #821

[codecov]

Codecov Report

Merging #826 (603e250) into master (f63bc76) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #826   +/-   ##
=======================================
  Coverage   80.68%   80.68%           
=======================================
  Files          57       57           
  Lines        1936     1936           
  Branches      434      434           
=======================================
  Hits         1562     1562           
  Misses        314      314           
  Partials       60       60           

Impacted Files	Coverage Δ
...rless-components/nextjs-component/src/component.ts	90.78% <ø> (ø)

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[dphang]

Thanks, since domain component doesn't have any test coverage yet, please test the change if it is working fine, then can merge it.

[huksley]

@dphang Would you like me to write a test on it? I am currently deploying it to my infra and it is working.

[dphang]

If you have time and it's simple that'd be great (there is an issue for this: #690), but we may move away from it in the future (looking into more robust IaC tools like CDK). But we can merge this one first. Thanks!

[dphang]

Ran e2e tests: https://github.com/serverless-nextjs/serverless-next.js/actions/runs/395710571