Make k8s-monitoring Helm Tests for Grafana Alloy work in CI

Write necessary cypress and script tests to ensure that CI will accurately be able to tell that Grafana Alloy is running healthy and as we would expect.

Here is an overview and the required templates for implementing these tests for a bigbang package via gluon: https://repo1.dso.mil/big-bang/apps/library-charts/gluon/-/blob/master/docs/bb-tests.md