Provide command line error when namespace is too long

Got this error: validation error detected: Value 'mu-jsmithi-service-spring-petclinic-acceptance-autoscaling-us-east-1' at 'roleName' failed to satisfy constraint: Member must have length less than or equal to 64

Maybe provide a warning from the command line when the namespace is going to create resource names that produce validation errors prior to launching the CFN stacks?

Approach... ensure length of Namespace + Environment + Service < 32

Looks like this also impacts the ability to use mu in APAC. Need to review our resource names and look to shrink size of them significantly