Update kubernetes client for https://github.com/galaxyproject/galaxy/commit/ce201991d86e804bb366d74637677eb42d776a11

Update Pulsar for https://github.com/galaxyproject/galaxy/commit/96e5aed4df7fdd911ddc0a9d1cecbdafb40ede56.

May or may not fix https://github.com/galaxyproject/galaxy/issues/14212,
but this is the right thing to do.

Drop legacy job conf for Galaxy framework tests, test against metadata_strategy: extended

Don't pass all environment variables to jobs launched by `Manager`

But set LC_CTYPE environment variable to enforce UTF-8 file encoding.

Similar to https://github.com/galaxyproject/galaxy/pull/13011 and
will solve
https://github.com/galaxyproject/galaxy/pull/13011/files#diff-3f0aa0fbd44b2692f0be1126a44fa3e5927dc134504baab708f2543f188e0e34R49-R50

Implement _GALAXY_JOB_TMP_DIR.

Enable globbed from_work_dir outputs for remote metadata

Remove Python <=3.5 code

Fix:

```
TypeError: load() missing 1 required positional argument: 'Loader'
```

on PyYAML 6.0 .

xref. https://github.com/galaxyproject/galaxy/pull/12755

matching Galaxy style.

The plugin use is not enforced but having the options configured is
still useful for code editor integration.

Using `ack --type=python -f | xargs pyupgrade --py3-plus`

Also:
- Remove dependency on `six`

Drop metadata directory hacks for pre-16.04 Galaxies.

Fix memory_statement.log being written to working directory.

Another attempt at replacing Galaxy's pulsar wheel for CI