boto_asg.present can no longer return a proper value

Description of Issue

when using boto_asg.present, it now results in:

Traceback (most recent call last):
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/state.py", line 2276, in call
    ret = self.states[cdata["full"]](
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 149, in __call__
    return self.loader.run(run_func, *args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 1228, in run
    return self._last_context.run(self._run_as, _func_or_method, *args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 1243, in _run_as
    return _func_or_method(*args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 1276, in wrapper
    return f(*args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/states/boto_asg.py", line 534, in present
    asg = __salt__["boto_asg.get_config"](name, region, key, keyid, profile)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 149, in __call__
    return self.loader.run(run_func, *args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 1228, in run
    return self._last_context.run(self._run_as, _func_or_method, *args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/loader/lazy.py", line 1243, in _run_as
    return _func_or_method(*args, **kwargs)
  File "/home/user/venv/infra/lib/python3.10/site-packages/salt/modules/boto_asg.py", line 187, in get_config
    ret[attr] = getattr(asg, attr).split(",")
AttributeError: 'NoneType' object has no attribute 'split'

Retrieving vpc_zone_identifiers result in None instead of array.
Salt uses the boto.ec2.autoscale library to get an asg object, then retrieve a list of vpc_zone_identifiers. Now, all of a sudden, this has stopped working and returns "None":

Python 3.10.6 (main, Mar 10 2023, 10:55:28) [GCC 11.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from boto.ec2.autoscale import *
>>> c = boto.ec2.autoscale.connect_to_region('us-east-1')
>>> asg = c.get_all_groups(names=['xxxxxxxxxxxxxxxxxxxxxxxxxx'])[0]
>>> print(asg.vpc_zone_identifier)
None

Boto3 still does this successfully:

>>> import boto3
>>> 
>>> asg_name = 'xxxxxxxxxxxx'
>>> client = boto3.client('autoscaling')
>>> asg_details = client.describe_auto_scaling_groups(AutoScalingGroupNames=[asg_name])
>>> vpc_zone_identifier = asg_details['AutoScalingGroups'][0]['VPCZoneIdentifier']
>>> print(vpc_zone_identifier)
subnet-xxxxxxxxxxxx,subnet-yyyyyyyyyyyy

The automation we use depends on this, and this was working until the end of last week.

This may have something to do with AWS changing things on their end: https://aws.amazon.com/about-aws/whats-new/2023/03/general-availability-amazon-vpc-lattice/

Setup

Provided in the Description

Steps to Reproduce Issue

# ASG Settings.
Ensure xxxxxxxxxxxxxxxxxxxx asg exists:
  boto_asg.present:
    - name: zzzzzzzzzzzzzzzzzzzzz
    - load_balancers:
      - xxxxxxxxxxxxxxxxxxxxxxxxx
      - yyyyyyyyyyyyyyyyyyyyyyyy
    - launch_config_name: zzzzzzzzzzzzzzzzzzzzzz
    - launch_config:
      - image_id: ami-xxxxxxxxxxxxxxxxxxxx
      - key_name: aaaaaaaaa
      - security_groups:
        - sssssssssssssssggggggggggggggg
      - instance_profile_name: zzzzzzzzzzzzzzzzzzzzzzzzz
      - instance_type: m5.xlarge
      - block_device_mappings:
        - "/dev/sda1":
            size: 500
            volume_type: gp3
            delete_on_termination: true
      - associate_public_ip_address: true
      - instance_monitoring: true
    - vpc_zone_identifier: ['subnet-xxxxxxxxxxxxxxx','subnet-yyyyyyyyyyyyyy' ]
    - availability_zones: ['us-east-1b','us-east-1c']
    - min_size: 1
    - max_size: 1
    - health_check_type: EC2
    - health_check_period: 900
    - termination_policies:
       - OldestInstance
       - OldestLaunchConfiguration
    - tags:
      - key: 'Name'
        value: 'cccccccccccccccccccccc'
    - profile: infra_profile

Versions Report

$ salt --versions-report
Salt Version:
          Salt: 3005.1+7.gfe67de4b7f
 
Dependency Versions:
          cffi: Not Installed
      cherrypy: Not Installed
      dateutil: 2.8.1
     docker-py: Not Installed
         gitdb: Not Installed
     gitpython: Not Installed
        Jinja2: 2.11.3
       libgit2: Not Installed
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 1.0.5
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     pycparser: Not Installed
      pycrypto: 3.10.1
  pycryptodome: 3.17
        pygit2: Not Installed
        Python: 3.10.6 (main, Mar 10 2023, 10:55:28) [GCC 11.3.0]
  python-gnupg: Not Installed
        PyYAML: 5.4.1
         PyZMQ: 20.0.0
         smmap: Not Installed
       timelib: Not Installed
       Tornado: 4.5.3
           ZMQ: 4.3.3
 
System Versions:
          dist: ubuntu 22.04 Jammy Jellyfish
        locale: utf-8
       machine: x86_64
       release: 5.19.0-38-generic
        system: Linux
       version: Ubuntu 22.04 Jammy Jellyfish

Start with salt/modules/boto_asg.py at get_config and salt/states/boto_asg.py at present, then reproduce the boto.ec2.autoscale lookup for vpc_zone_identifier. Compare the returned ASG data with the boto3 result and determine the expected handling when the value is None. Done means boto_asg.present no longer raises the reported AttributeError while processing the supplied configuration.