Fix x509 CRL creation (fixes #54867)

[alxwr]

What does this PR do?

Fixes this error:

     Comment: An exception occurred in this state: Traceback (most recent call last):                                 
                File "/usr/local/lib/python3.7/site-packages/salt/state.py", line 2154, in call                       
                  *cdata["args"], **cdata["kwargs"]                                                                   
                File "/usr/local/lib/python3.7/site-packages/salt/loader.py", line 2085, in wrapper                   
                  return f(*args, **kwargs)                                                                           
                File "/usr/local/lib/python3.7/site-packages/salt/states/x509.py", line 828, in crl_managed           
                  current = __salt__["x509.read_crl"](crl=name)                                                       
                File "/usr/local/lib/python3.7/site-packages/salt/modules/x509.py", line 678, in read_crl             
                  crltempfile.write(salt.utils.stringutils.to_str(text))                                              
                File "/usr/local/lib/python3.7/tempfile.py", line 481, in func_wrapper                                
                  return func(*args, **kwargs)                                                                        
              TypeError: a bytes-like object is required, not 'str'

What issues does this PR fix or reference?

Fixes: #54867

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• Docs (no updates were necessary)
• Changelog - https://docs.saltstack.com/en/master/topics/development/changelog.html
• Tests written/updated

Note: contrary to the testing guide, this is the proper command to run the tests:

nox -e 'pytest-zeromq-m2crypto-3(coverage=False)' -- --run-slow tests/unit/modules/test_x509.py tests/integration/states/test_x509.py

[…]

collected 30 items                                                                                                   

tests/unit/modules/test_x509.py ......................................................................................
..................................................+++++
....................................................+++++
.....
tests/integration/states/test_x509.py ..................

=========================================== 30 passed in 126.97s (0:02:06) ===========================================
nox > Session pytest-parametrized-3(crypto='m2crypto', transport='zeromq', coverage=False) was successful.
nox > Ran multiple sessions:
nox > * pytest-zeromq-m2crypto-3(coverage=False): success
nox > * pytest-parametrized-3(crypto='m2crypto', transport='zeromq', coverage=False): success

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No

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[krionbsd]

@alxwr thank you for contribution! Could you please run pre-commit run $filename to pass pre-commit CI, thanks.

[alxwr]

@alxwr thank you for contribution! Could you please run pre-commit run $filename to pass pre-commit CI, thanks.

@krionbsd Thanks for this hint!
(Note for other readers: I had to pip3 install pre-commit first.)

Result: success, including this beauty:

Your code has been rated at 9.81/10

[krionbsd]

@alxwr thank you for contribution! Could you please run pre-commit run $filename to pass pre-commit CI, thanks.

@krionbsd Thanks for this hint!
(Note for other readers: I had to pip3 install pre-commit first.)

Result: success, including this beauty:

Your code has been rated at 9.81/10

Awesome! Thank you! It will be merged soon.