Bundled python cannot use system pythons crcmod nowadays

```
[van@test-crcmod ~]$ sudo pip3 uninstall crcmod
Uninstalling crcmod-1.7:
/usr/local/lib64/python3.6/site-packages/crcmod-1.7-py3.6.egg-info
/usr/local/lib64/python3.6/site-packages/crcmod/__init__.py
/usr/local/lib64/python3.6/site-packages/crcmod/__pycache__/__init__.cpython-36.pyc
/usr/local/lib64/python3.6/site-packages/crcmod/__pycache__/_crcfunpy.cpython-36.pyc
/usr/local/lib64/python3.6/site-packages/crcmod/__pycache__/crcmod.cpython-36.pyc
/usr/local/lib64/python3.6/site-packages/crcmod/__pycache__/predefined.cpython-36.pyc
/usr/local/lib64/python3.6/site-packages/crcmod/__pycache__/test.cpython-36.pyc
/usr/local/lib64/python3.6/site-packages/crcmod/_crcfunext.cpython-36m-x86_64-linux-gnu.so
/usr/local/lib64/python3.6/site-packages/crcmod/_crcfunpy.py
/usr/local/lib64/python3.6/site-packages/crcmod/crcmod.py
/usr/local/lib64/python3.6/site-packages/crcmod/predefined.py
/usr/local/lib64/python3.6/site-packages/crcmod/test.py
Proceed (y/n)? y
Successfully uninstalled crcmod-1.7
[van@test-crcmod ~]$ sudo pip3 install --no-cache-dir -U crcmod
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Collecting crcmod
Downloading https://files.pythonhosted.org/packages/6b/b0/e595ce2a2527e169c3bcd6c33d2473c1918e0b7f6826a043ca1245dd4e5b/crcmod-1.7.tar.gz (89kB)
100% |████████████████████████████████| 92kB 6.1MB/s
Installing collected packages: crcmod
Running setup.py install for crcmod ... done
/usr/local/lib/python3.6/site-packages/setuptools/command/install.py:37: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
setuptools.SetuptoolsDeprecationWarning,
Successfully installed crcmod-1.7
[van@test-crcmod ~]$ gsutil version -l
gsutil version: 5.5
checksum: 54a50a74649e27e7568328e5852187f0 (OK)
boto version: 2.49.0
python version: 3.8.11 (default, Sep 29 2021, 17:21:43) [Clang 12.0.1 ]
OS: Linux 3.10.0-1160.49.1.el7.x86_64
multiprocessing available: True
using cloud sdk: True
pass cloud sdk credentials to gsutil: True
config path(s): /etc/boto.cfg
gsutil path: /usr/lib64/google-cloud-sdk/bin/gsutil
compiled crcmod: False
installed via package manager: False
editable install: False
```

```
[van@test-crcmod ~]$ /usr/lib64/google-cloud-sdk/platform/bundledpythonunix/bin/python3
Python 3.8.11 (default, Sep 29 2021, 17:21:43)
[Clang 12.0.1 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import crcmod._crcfunext
Traceback (most recent call last):
File "", line 1, in
ModuleNotFoundError: No module named 'crcmod._crcfunext'
>>>
[van@test-crcmod ~]$ python3
Python 3.6.8 (default, Aug 13 2020, 07:46:32)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import crcmod._crcfunext
>>>
```

Same behavior I see on both RHEL7.9 and on Fedora 35

Reproduce the import comparison using /usr/lib64/google-cloud-sdk/platform/bundledpythonunix/bin/python3 and the system python3, then inspect the crcmod behavior shown by gsutil version -l. Determine why the bundled interpreter cannot import crcmod._crcfunext while the system interpreter can, and verify the corrected bundled setup with the same commands.

Written by the indexing model from the issue text.