dynamodb_table: use region derived from get_aws_connection_info

[s-hertel]

SUMMARY

Region can be derived from a profile as well as module options. Use the region from get_aws_connection_info(). Fixes setting tags.

Fixes:

The full traceback is:
Traceback (most recent call last):
  File "/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py", line 490, in <module>
    main()
  File "/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py", line 484, in main
    create_or_update_dynamo_table(connection, module, boto3_dynamodb, boto3_sts)
  File "/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py", line 247, in create_or_update_dynamo_table
    ':table/' +
TypeError: Can't convert 'NoneType' object to str implicitly

fatal: [localhost]: FAILED! => {
    "changed": false,
    "module_stderr": "Traceback (most recent call last):\n  File \"/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py\", line 490, in <module>\n    main()\n  File \"/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py\", line 484, in main\n    create_or_update_dynamo_table(connection, module, boto3_dynamodb, boto3_sts)\n  File \"/var/folders/by/k8_fbl593dlctgqmwq5wzl2c0000gn/T/ansible_kues3ruy/ansible_module_dynamodb_table.py\", line 247, in create_or_update_dynamo_table\n    ':table/' +\nTypeError: Can't convert 'NoneType' object to str implicitly\n",
    "module_stdout": "",
    "msg": "MODULE FAILURE",
    "rc": 0
}
	to retry, use: --limit @/Users/shertel/Workspace/ansible/my_playbooks/aws/dynamodb_table/make_table.retry

PLAY RECAP ************************************************************************************************************************************
localhost                  : ok=0    changed=0    unreachable=0    failed=1

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

lib/ansible/modules/cloud/amazon/dynamodb_table.py

ANSIBLE VERSION

2.5.0

[ansibot]

cc @loia
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