Added datetime encoder for json

[abhi1693]

What does this PR do?

What issues does this PR fix or reference?

Fixes: #59952

Previous Behavior

2022-04-19 16:07:33,385 [salt.loaded.int.netapi.rest_cherrypy.app:912 ][DEBUG   ][685855] Could not serialize the return data from Salt.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/salt/netapi/rest_cherrypy/app.py", line 908, in hypermedia_handler
    response = out(ret)
  File "/usr/lib/python3/dist-packages/salt/utils/json.py", line 137, in dumps
    return json_module.dumps(obj, **kwargs)
  File "/usr/lib/python3.8/json/__init__.py", line 234, in dumps
    return cls(
  File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/usr/lib/python3.8/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type datetime is not JSON serializable

New Behavior

The above error is handled appropriately

Merge requirements satisfied?

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

• Docs
• Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• Tests written/updated

Commits signed with GPG?

Yes

Please review Salt's Contributing Guide for best practices.

See GitHub's page on GPG signing for more information about signing commits with GPG.

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[abhi1693]

@MKLeb Can you please review this?

[MKLeb]

Hi @abhi1693, would you mind adding tests as well?

[MKLeb]

@abhi1693 Any updates here?

[abhi1693]

@MKLeb Hey sorry, I got side tracked from this. I'm on vacation this week. I'll work on this either this weekend or next Monday.

[MKLeb]

@abhi1693 Thanks for circling back to this one. This will just need tests and then I'll see if we can get it merged.

[abhi1693]

I have been trying to get nox to work but it's stuck installing for last few hours

[abhi1693]

@MKLeb I need some help with the unit tests. I have not yet made any changes and it's failing. I tried to run the unit test on the master branch and it's failing on my system.

************* Module tests.unit.utils.test_json
tests/unit/utils/test_json.py:1: [E0599(file-perms), ] Module file has the wrong file permissions(expected 0o644): 0o664

I'm unable to figure out which module has the wrong file permissions

[MKLeb]

@abhi1693 I believe it is pointing to the test module, tests.unit.utils.test_json. I've had this happen to me before, a chmod with the expected perms usually does the trick.

[abhi1693]

@dwoz I have changed the code to make the linter happy. It works on my local system on Linux with Python 3.10

[abhi1693]

@s0undt3ch and @dwoz I have made all changes, can this be reviewed and merged now?

[abhi1693]

@s0undt3ch @dwoz Can you please review this?

[abhi1693]

@dwoz @s0undt3ch Guys, it's been 2 years and it's an incredibly small change. I have done everything that's been asked but this review process is incredibly slow to get past. If it's not going to be merged, let me know. I'll look for alternatives like Ansible because we are stuck on a very old release due to this bug