Fix apollo-server-core runQuery breaks async_hook tracking

[domarmstrong]

By creating a promise out of the execution flow the ability to trace the
async call stack is lost.

TODO:

• Update CHANGELOG.md with your change (include reference to issue & this PR)
• Make sure all of the significant new logic is covered by tests
• Rebase your changes on master so that they can be merged easily
• Make sure all tests and linter rules pass

[apollo-cla]

@domarmstrong: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Meteor Contributor Agreement here: https://contribute.meteor.com/

[martijnwalraven]

Thanks!