Fix data race in RPC health check test

[aditya1702]

What

Do not start goroutine in tests

Why

It looks like running these goroutines in tests is triggering data race conditions in our builds.

Known limitations

NA

Issue that this PR addresses

Closes #111

Checklist

PR Structure

• It is not possible to break this PR down into smaller PRs.
• This PR does not mix refactoring changes with feature changes.
• This PR's title starts with name of package that is most changed in the PR, or all if the changes are broad or impact many packages.

Thoroughness

• This PR adds tests for the new functionality or fixes.
• All updated queries have been tested (refer to this check if the data set returned by the updated query is expected to be same as the original one).

Release

• This is not a breaking change.
• This is ready to be tested in development.
• The new functionality is gated with a feature flag if this is not ready for production.