ec2_transit_gateway error with gateway has no "Description" key

[fortinetps]

SUMMARY

When I was trying to create a TGW, ec2_transit_gateway module return error and failed to create one. I captured the error messages below. Which is about line#340, module exams each gateway from the return, and checks the "Description" and "State". But it turns out in my case, the "Description" key doesn't exist.

I simply change #340 from directly access the "Description" key to use get() function,
if description == gateway.get('Description','') and gateway['State'] != 'deleted':
This workaround solved my problem.

ISSUE TYPE

• Bug Report

COMPONENT NAME

ANSIBLE VERSION

ansible 2.10.0.dev0
  config file = None
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.7/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.7.7 (default, Apr 23 2020, 15:05:00) [GCC 6.3.0 20170516]
# /root/.ansible/collections/ansible_collections
Collection        Version
----------------- -------
amazon.aws        0.1.1  
ansible.netcommon 0.0.2  
community.aws     0.1.0  

CONFIGURATION

OS / ENVIRONMENT

STEPS TO REPRODUCE

EXPECTED RESULTS

ACTUAL RESULTS

The full traceback is:
Traceback (most recent call last):
  File "/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py", line 102, in <module>
    _ansiballz_main()
  File "/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py", line 94, in _ansiballz_main
    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
  File "/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py", line 40, in invoke_module
    runpy.run_module(mod_name='ansible_collections.community.aws.plugins.modules.ec2_transit_gateway', init_globals=None, run_name='__main__', alter_sys=True)
  File "/usr/local/lib/python3.7/runpy.py", line 205, in run_module
    return _run_module_code(code, init_globals, run_name, mod_spec)
  File "/usr/local/lib/python3.7/runpy.py", line 96, in _run_module_code
    mod_name, mod_spec, pkg_name, script_name)
  File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py", line 578, in <module>
  File "/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py", line 572, in main
  File "/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py", line 270, in process
  File "/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py", line 480, in ensure_tgw_present
  File "/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py", line 340, in get_matching_tgw
KeyError: 'Description'
fatal: [us-east-2-vpc01]: FAILED! => {
    "changed": false,
    "module_stderr": "Traceback (most recent call last):\n  File \"/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py\", line 102, in <module>\n    _ansiballz_main()\n  File \"/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py\", line 94, in _ansiballz_main\n    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\n  File \"/root/.ansible/tmp/ansible-tmp-1589245545.3153915-20091-254377192640234/AnsiballZ_ec2_transit_gateway.py\", line 40, in invoke_module\n    runpy.run_module(mod_name='ansible_collections.community.aws.plugins.modules.ec2_transit_gateway', init_globals=None, run_name='__main__', alter_sys=True)\n  File \"/usr/local/lib/python3.7/runpy.py\", line 205, in run_module\n    return _run_module_code(code, init_globals, run_name, mod_spec)\n  File \"/usr/local/lib/python3.7/runpy.py\", line 96, in _run_module_code\n    mod_name, mod_spec, pkg_name, script_name)\n  File \"/usr/local/lib/python3.7/runpy.py\", line 85, in _run_code\n    exec(code, run_globals)\n  File \"/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py\", line 578, in <module>\n  File \"/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py\", line 572, in main\n  File \"/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py\", line 270, in process\n  File \"/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py\", line 480, in ensure_tgw_present\n  File \"/tmp/ansible_community.aws.ec2_transit_gateway_payload_7by178pi/ansible_community.aws.ec2_transit_gateway_payload.zip/ansible_collections/community/aws/plugins/modules/ec2_transit_gateway.py\", line 340, in get_matching_tgw\nKeyError: 'Description'\n",
    "module_stdout": "",
    "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error",
    "rc": 1

[ansibullbot]

Files identified in the description:
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[tremble]

I've attempted to reproduce this issue and have not managed to do so. Looking at the botocore history Description was added in botocore 1.12.52 and should always be returned.

Since release 2.0.0 of these collections we've dropped support for botocore < 1.18.0 and as such this issue should not be a problem for currently supported releases of this collection.