Increase the timeout for tests to 3,000,000 secs

[shruti25ratnam]

Currently testsuite.py only allows upto 150000 secs:

For any greater timeouts it errors out with the following message and trace:
Error: OverflowError: timeout value is too large

Traceback (most recent call last):
File "D:\lisa\2\lisa\lisa\testsuite.py", line 680, in __before_case
self.__call_with_retry_and_timeout(
File "D:\lisa\2\lisa\lisa\testsuite.py", line 750, in __call_with_retry_and_timeout
retry_call(
File "D:\lisa\2\lisa.venv\lib\site-packages\retry\api.py", line 101, in retry_call
return __retry_internal(partial(f, *args, **kwargs), exceptions, tries, delay, max_delay, backoff, jitter, logger)
File "D:\lisa\2\lisa.venv\lib\site-packages\retry\api.py", line 33, in __retry_internal
return f()
File "D:\lisa\2\lisa.venv\lib\site-packages\func_timeout\dafunc.py", line 86, in func_timeout
thread.join(timeout)
File "C:\Users\shratnam\AppData\Local\Programs\Python\Python310\lib\threading.py", line 1100, in join
self._wait_for_tstate_lock(timeout=max(timeout, 0))
File "C:\Users\shratnam\AppData\Local\Programs\Python\Python310\lib\threading.py", line 1116, in _wait_for_tstate_lock
if lock.acquire(block, timeout):