Fix unexpected exception in wait_for while executing reboot (#16085)

Description of PR
Summary:
Fixes # (issue)
platform_tests/test_reload_config.py::test_reload_configuration_checks failed due to the following error:

TypeError: unsupported type for timedelta seconds component: NoneType

in the following error test log:

Traceback (most recent call last):
  File \"/tmp/.ansible-AzDevOps/ansible-tmp-1734119665.955616-147727-226449133302882/AnsiballZ_wait_for.py\", line 107, in <module>
    _ansiballz_main()
  File \"/tmp/.ansible-AzDevOps/ansible-tmp-1734119665.955616-147727-226449133302882/AnsiballZ_wait_for.py\", line 99, in _ansiballz_main
    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
  File \"/tmp/.ansible-AzDevOps/ansible-tmp-1734119665.955616-147727-226449133302882/AnsiballZ_wait_for.py\", line 47, in invoke_module
    runpy.run_module(mod_name='ansible.modules.wait_for', init_globals=dict(_module_fqn='ansible.modules.wait_for', _modlib_path=modlib_path),
  File \"/usr/lib/python3.8/runpy.py\", line 207, in run_module
    return _run_module_code(code, init_globals, run_name, mod_spec)
  File \"/usr/lib/python3.8/runpy.py\", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File \"/usr/lib/python3.8/runpy.py\", line 87, in _run_code
    exec(code, run_globals)
  File \"/tmp/ansible_wait_for_payload_9brlx4xp/ansible_wait_for_payload.zip/ansible/modules/wait_for.py\", line 689, in <module>
  File \"/tmp/ansible_wait_for_payload_9brlx4xp/ansible_wait_for_payload.zip/ansible/modules/wait_for.py\", line 544, in main
TypeError: unsupported type for timedelta seconds component: NoneType
",
  "msg": "MODULE FAILURE
See stdout/stderr for the exact error",
That because timeout parameter is set to None for localhost.wait_for function.

The change was made in #15951

Type of change
 Bug fix
 Testbed and Framework(new/improvement)
 Test case(new/improvement)
Back port request
 202012
 202205
 202305
 202311
 202405
Approach
What is the motivation for this PR?
Fix the TypeError: unsupported type for timedelta seconds component: NoneType for localhost.wait_for.

How did you do it?
Don't pass in timeout if it's not module chassis

How did you verify/test it?
Run platform_tests/test_reload_config.py::test_reload_configuration_checks on non T2 testbed.

Any platform specific information?

Signed-off-by: Zhaohui Sun <[email protected]>

tests/platform_tests/test_reload_config.py

@@ -150,7 +150,7 @@ def test_reload_configuration_checks(duthosts, enum_rand_one_per_hwsku_hostname,
     if not config_force_option_supported(duthost):
         return
 
-    timeout = None
+    timeout = 0
     if duthost.get_facts().get("modular_chassis"):
         timeout = 420