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##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Add support for `MaxInstanceLifetime` option to AWS ec2_asg module.
AWS feature introduction link: https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-ec2-auto-scaling-supports-max-instance-lifetime/

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ec2_asg

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Usage example:
<!--- Paste example playbooks or commands between quotes below -->
```yaml
- ec2_asg:
    name: myasg
    region: us-east-1
    launch_config_name: my_new_lc
    min_size: 1
    max_size: 5
    desired_capacity: 3
    max_instance_lifetime: 604800  # seconds
```

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description:
      - List of ELB names to use for the group. Use for classic load balancers.
    type: list
    elements: str
  target_group_arns:
    description:
      - List of target group ARNs to use for the group. Use for application load balancers.
    version_added: "2.4"
    type: list
    elements: str
  availability_zones:
    description:
      - List of availability zone names in which to create the group.
      - Defaults to all the availability zones in the region if I(vpc_zone_identifier) is not set.
    type: list
    elements: str
  launch_config_name:
    description:
      - Name of the Launch configuration to use for the group. See the M(ec2_lc) module for managing these.
      - If unspecified then the current group value will be used.  One of I(launch_config_name) or I(launch_template) must be provided.
    type: str
  launch_template:
    description:
      - Dictionary describing the Launch Template to use
    suboptions:
      version:
        description:
          - The version number of the launch template to use.
          - Defaults to latest version if not provided.
        type: str