e2e test: add test for node integration (aws-api)

[vjeffrey]

User Story

In order to move away from manual testing, we need to cover the items currently in our acceptance checklists.
One of these if creating a node integration of aws-api type.
So let's automate it via our cypress e2e tests!

This involves writing an e2e test that:

• navigates to node integrations
• creates an integration (type aws-api) using the "read creds from env" option
• ensure the integration was created
• ensure the integration added nodes by checking the details page
• delete the integration

Definition of Done

cypress e2e test for adding a node integration