Add automated chart testing

[brucetony]

Tests should be written for the helm charts and corresponding github actions to run them for each PR. Ideally, integration tests are also performed. Here are a list of references we can use for creating such tests:

• ct (chart-testing) - this appears to be the de facto standard for testing helm charts
• KinD (k8s in Docker) - Perfect for running both chart and integration tests as a GH action
• test hooks - the built-in annotation for running simple unit tests against individual resources
• Kyverno - policy config testing
• Basic commands such as helm template|lint

[brucetony]

This will have 3 layers of checks:

• Component level (unit tests ran as part of the CI pipeline for merging into master branches)
• Deployment level (all services can deploy in a k8s environment --> KinD)
• Integration level (script which checks key functionalities of each component)

For integration testing, two "nodes" will be deployed in the same KinD, one as default and one as an aggregator

The integration script will perform the following tasks:

• Obtain a Keycloak token (checks Hub Adapter's communication with Keycloak)
• Retrieve the analysis nodes for our test node (checks Hub Adapter's communication with the Hub)
• Create a data store for the test project (checks Kong)
• Start the test analysis (checks PO, Result Service, and Message Broker)