##### SUMMARY

The unarchive integration test fails when LC_ALL is not set.

##### ISSUE TYPE

Bug Report

##### COMPONENT NAME

unarchive

##### ANSIBLE VERSION

devel

##### CONFIGURATION

N/A

##### OS / ENVIRONMENT

N/A

##### STEPS TO REPRODUCE

1. Set `ansible_connection=ssh ansible_host=localhost` for `testhost` to prevent modules from inheriting the environment from the controller: https://github.com/ansible/ansible/blob/edcb5b6775adac09eee5412b499b8f0aa5194610/test/integration/inventory#L6
2. Run the test in an environment where LC_ALL is not set by default: `ansible-test integration unarchive --remote freebsd/12.0 -v`

##### EXPECTED RESULTS

Tests pass.

##### ACTUAL RESULTS

Tests traceback:

```
TASK [unarchive : test that unarchive works with an archive that contains non-ascii filenames] **************************************************************************
fatal: [testhost]: FAILED! => {"changed": false, "module_stderr": "Shared connection to localhost closed.\r\n", "module_stdout": "Traceback (most recent call last):\r\n  File \"/root/.ansible/tmp/ansible-tmp-1561576726.3763218-37161750934991/AnsiballZ_unarchive.py\", line 139, in <module>\r\n    _ansiballz_main()\r\n  File \"/root/.ansible/tmp/ansible-tmp-1561576726.3763218-37161750934991/AnsiballZ_unarchive.py\", line 131, in _ansiballz_main\r\n    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\r\n  File \"/root/.ansible/tmp/ansible-tmp-1561576726.3763218-37161750934991/AnsiballZ_unarchive.py\", line 65, in invoke_module\r\n    spec.loader.exec_module(module)\r\n  File \"<frozen importlib._bootstrap_external>\", line 678, in exec_module\r\n  File \"<frozen importlib._bootstrap>\", line 219, in _call_with_frames_removed\r\n  File \"/tmp/ansible_unarchive_payload_o9_x930g/__main__.py\", line 909, in <module>\r\n  File \"/tmp/ansible_unarchive_payload_o9_x930g/__main__.py\", line 859, in main\r\n  File \"/usr/local/lib/python3.6/genericpath.py\", line 42, in isdir\r\n    st = os.stat(s)\r\nUnicodeEncodeError: 'ascii' codec can't encode characters in position 51-54: ordinal not in range(128)\r\n", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}
```

Failure on Shippable: https://app.shippable.com/github/ansible/ansible/runs/129521/18/tests
remote_src = module.params['remote_src']
    file_args = module.load_file_common_arguments(module.params)
    
    if not os.path.exists(src):
        if not remote_src:
            module.fail_json(msg="Source '%s' failed to transfer" % src)
        
        elif '://' in src:
            src = fetch_file(module, src)
        else:
            module.fail_json(msg="Source '%s' does not exist" % src)
    if not os.access(src, os.R_OK):
        module.fail_json(msg="Source '%s' not readable" % src)
    
    try:
        if os.path.getsize(src) == 0:
            module.fail_json(msg="Invalid archive '%s', the file is 0 bytes" % src)
    except Exception as e:
        module.fail_json(msg="Source '%s' not readable, %s" % (src, to_native(e)))
    
    if not os.path.isdir(dest):
        module.fail_json(msg="Destination '%s' is not a directory" % dest)
    handler = pick_handler(src, dest, file_args, module)
    res_args = dict(handler=handler.__class__.__name__, dest=dest, src=src)
    
    check_results = handler.is_unarchived()
    
    
    if module.check_mode:
        res_args['changed'] = not check_results['unarchived']