Fix logs overwriting issue for remote fs

[kaushikb11]

What does this PR do?

Related Issue: fsspec/gcsfs#312

There's an inconsistency while using fsspec's isdir for some remote fs.

Along the lines of The folder name will be an exact match and assumed to be a file on the first invocation.
This is causing our logger to have issues with remote filesystems, by overwriting the existing logs, rather than creating a new dir.

-> if not self._fs.isdir(root_dir):
(Pdb) self._fs.isdir(root_dir)
False
(Pdb) self._fs.isdir(root_dir)
True

Before submitting

• Was this discussed/approved via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or internal minor changes/refactorings)

PR review

Anyone in the community is free to review the PR once the tests have passed.
Before you start reviewing make sure you have read Review guidelines. In short, see the following bullet-list:

• Is this pull request ready for review? (if not, please submit in draft mode)
• Check that all items from Before submitting are resolved
• Make sure the title is self-explanatory and the description concisely explains the PR
• Add labels and milestones (and optionally projects) to the PR so it can be classified

Did you have fun?

Make sure you had fun coding 🙃

[codecov]

Codecov Report

Merging #7889 (5f8e6e6) into master (b214442) will decrease coverage by 5%.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master   #7889    +/-   ##
=======================================
- Coverage      91%     86%    -5%     
=======================================
  Files         204     204            
  Lines       13630   13632     +2     
=======================================
- Hits        12414   11790   -624     
- Misses       1216    1842   +626     

[ethanwharris]

LGTM 😃

[awaelchli]

Probably needs a changelog entry right?
I added the milestone