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##### SUMMARY
<!--- Explain the problem briefly below -->
Ansible currently contains two modules for managing AWS EC2 instances: [`ec2`](https://docs.ansible.com/ansible/latest/modules/ec2_module.html) and [`ec2_instance`](https://docs.ansible.com/ansible/latest/modules/ec2_instance_module.html).

There is considerable overlap between the modules, but it's unclear what the differences are and why there are two modules in the first place.

##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ec2
ec2_instance

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.10.0.dev0
  config file = /home/user/.ansible.cfg
  configured module search path = ['/home/user/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/user/ansible/lib/ansible
  executable location = /home/user/ansible/bin/ansible
  python version = 3.7.5 (default, Oct 27 2019, 15:43:29) [GCC 9.2.1 20191022]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below
RETRY_FILES_ENABLED(/home/user/.ansible.cfg) = False
```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
Debian bullseye/sid

##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
N/A
```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
N/A

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below
N/A
```

from ast import literal_eval
from distutils.version import LooseVersion
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.ec2 import get_aws_connection_info, ec2_argument_spec, ec2_connect
from ansible.module_utils.six import get_function_code, string_types
from ansible.module_utils._text import to_bytes, to_text
try:
    import boto.ec2
    from boto.ec2.blockdevicemapping import BlockDeviceType, BlockDeviceMapping
    from boto.exception import EC2ResponseError
    from boto import connect_ec2_endpoint
    from boto import connect_vpc
    HAS_BOTO = True
except ImportError:
    HAS_BOTO = False
def find_running_instances_by_count_tag(module, ec2, vpc, count_tag, zone=None):
    
    state = module.params.get('state')
    if state not in ['running', 'stopped']:
        state = None
    reservations = get_reservations(module, ec2, vpc, tags=count_tag, state=state, zone=zone)
    instances = []
    for res in reservations:
        if hasattr(res, 'instances'):
            for inst in res.instances:
                if inst.state == 'terminated' or inst.state == 'shutting-down':
                    continue
                instances.append(inst)
    return reservations, instances
def _set_none_to_blank(dictionary):