[DSpace 7 Upgrade] Update dspace-angular CI to run e2e tests against tamu-dspace-7_x docker deployment

[wwelling]

The CI should run e2e tests against our customizations. This will require updating the GitHub action build workflow to build and use a docker image that builds from our customizations from DSpace.

The submission cypress test will require updating to pass.

[wwelling]

Here are currently known options on how to run e2e tests against our customized DSpace:

• Have harbor open through firewall for GitHub actions to pull our DSpace image.
• Have our DSpace image or a similar image built from our custom DSpace published to Docker Hub or GitHub package image repository.
• Have GitHub action actually build the DSpace image from our customized DSpace fork.

@jmicah, how should we proceed?