The goal is to check the following:

• verify enabling the feature in the KnativeServing resource

• init-container-name-template (default init container name) works correctly 
• .status.initContainerStatuses on the Pod created by Knative service reflects the configuration in Knative service
• .status initContainerStatuses on the Revision includes resolved image digest
• resource requests and limits are propagated from the Knative service to the Init container
• verify that lifecycle, livenessProbe, readinessProbe, or startupProbe cannot be used on the init containers
• verify that the init container can mount a "secret" volume and application container can mount a different secret volume