Support for immutable installation

[yanivpaz]

I saw that AMI creation is already included in the templates dir .
https://github.com/aws-quickstart/quickstart-jfrog-artifactory/blob/main/templates/jfrog-ami-creation.template.yaml#L194

however, the generated image is not supported in the deployment part:
https://github.com/aws-quickstart/quickstart-jfrog-artifactory/blob/main/templates/jfrog-artifactory-ec2-instance.template.yaml#L94

is it possible to fix the jfrog-artifactory-ec2-instance.yaml to support the customized image?