[cloud] new module aws_batch_job_queue: support for AWS Batch Job Queues (#26701)

1. Removed redundant default values in argument_spec
2. Enclosed non standard python libraries in Try Except ImportError block
3. Added region as a mandatory element in argument_spec
4. Updated the typo in api_params while accessing job queue. Changed it from job_queue to jobQueue
5. Updated the set_api_params() method to use snake_dict_to_camel_dict()
6. Updated the ANSIBLE_METADATA version from 1.0 to 1.1
7. Updated the version_added in Documentation from 2.4 to 2.5
8. Initialized response value to None
9. Updated the RETUN documentation
10. Updated the return from manage_state() method to not embed batch_job_queue_action in ansible_facts
11. Updated the module.exit_json()  in main() to convert any keys back to snake_dict format using camel_dict_to_snake_dict to maintain consistency throughout the module
12. Changed the filename from batch_job_queue.py to aws_batch_job_queue.py

lib/ansible/module_utils/aws/batch.py

@@ -29,7 +29,7 @@
 This module adds shared support for Batch modules.
 """
 
-from ansible.module_utils.ec2 import get_aws_connection_info, boto3_conn
+from ansible.module_utils.ec2 import get_aws_connection_info, boto3_conn, snake_dict_to_camel_dict
 
 try:
     from botocore.exceptions import ClientError
@@ -84,3 +84,14 @@ def cc(key):
     """
     components = key.split('_')
     return components[0] + "".join([token.capitalize() for token in components[1:]])
+
+
+def set_api_params(module, module_params):
+    """
+    Sets module parameters to those expected by the boto3 API.
+    :param module:
+    :param module_params:
+    :return:
+    """
+    api_params = dict((k, v) for k, v in dict(module.params).items() if k in module_params and v is not None)
+    return snake_dict_to_camel_dict(api_params)