[FEATURE REQUEST] Consistency command structure between `service acl` & `service acl-entry`

[robbat2]

Is your feature request related to a problem? Please describe.
service acl describe accepts the name of the Service, Service Version, and ACL name.

fastly service acl describe --service-name $SVCNAME --version latest --name $ACLNAME

However, service acl-entry list requires the ID of the ACL.

./fastly service acl-entry update  --service-name $SVCNAME  --acl-id=$ACL_ID ...

Describe the solution you'd like
Usability would be improved with support for writing it this way:

./fastly service acl-entry update --service-name $SVCNAME --version latest --acl-name $ACLNAME ...

(applies to the other acl-entry commands as well)

Describe alternatives you've considered
Use fastly acl describe to get the ID and then script the next command.

[kpfleming]

It could be possible to accept --service-name (or --service-id) and --acl-name, but there is no need for --version because ACL entries are unversioned; the mapping from ACL name to ACL ID would always be done using the latest or active version of the service.