Add us5 Site

[agocs]

What does this PR do?

Adds us5.datadoghq.com. We shouldn't merge this PR until US5 is ready to go.

Motivation

Testing Guidelines

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
• [ ] This PR impacts documentation, and it has been updated (or a ticket has been logged)
• [ ] This PR's changes are covered by the automated tests
• [ ] This PR collects user input/sensitive content into Datadog

[codecov-commenter]

Codecov Report

Merging #44 (57cd3a6) into master (b7bc963) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   89.95%   89.95%           
=======================================
  Files           7        7           
  Lines         458      458           
  Branches      100      100           
=======================================
  Hits          412      412           
  Misses         22       22           
  Partials       24       24           

Impacted Files	Coverage Δ
serverless/src/env.ts	91.22% <100.00%> (ø)

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