Ability to upload contents of directory only without creating the parent directory in Cloudinary.

[chrissnyder2337]

Brief Summary of Changes

Add the ability to upload the contents of a local directory without requiring that the parent directory (the local_folder) be created in Cloudinary.

Without this change, it is impossible to use cld upload_dir to upload a local directory's contents to Cloudinary without also creating a directory/folder within Cloudinary that also has the same name.

This was implemented by introducing new --exclude-dir-name (-e) command option that allowa the user to decide if the local parent directory should be created in Cloudinary, or just its contents.

Example without flag
Upload the local folder, my_images, and all its contents and sub-folders to the Cloudinary folder my_images_on_cloudinary, overwriting existing files. This example was pulled from the Cloudinary CLI documentation.

cld upload_dir -f my_images_on_cloudinary -o overwrite true my_images

This would result in the following folder structure in Cloudinary:

    Home
    +--my_images_on_cloudinary
    |  +-- my_images
    |  |   +-- <all assets and sub-folders of my_images>

Example using new -e (--exclude-dir-name) flag
Upload the contents of local folder, my_images, and all sub-folders to the Cloudinary folder my_images_on_cloudinary, overwriting existing files.

cld upload_dir -f my_images_on_cloudinary -e -o overwrite true my_images

This would result in the following folder structure in Cloudinary:

    Home
    +-- my_images_on_cloudinary
    |  +-- <all assets and sub-folders of my_images>

What does this PR address?

• GitHub issue (Ability to upload contents of directory only without creating the parent directory in Cloudinary #64)
• Refactoring
• New feature
• Bug fix
• Adds more tests

Are tests included?

• Yes
• No

Reviewer, please note:

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I ran the full test suite before pushing the changes and all the tests pass.

[const-cloudinary]

@chrissnyder2337 Thank you for the PR! It is really a good use case.
We had an internal discussion about the parameter name and we got to the following:
It would be great if you could change the parameter name to:
--use-parent-dir and set it to True by default (current behavior)
Add a few tests under:
https://github.com/cloudinary/cloudinary-cli/blob/master/test/test_modules/test_cli_upload_dir.py

[chrissnyder2337]

@const-cloudinary I have changed the parameter's name to --use-parent-dir and set it to default to true.

Due to the way that boolean flags work, and the desire to keep all existing functionality when the new command line option was not provided, I also needed to add a way to turn it off by adding a --dont-use-parent-dir(-P) option.

See https://click.palletsprojects.com/en/8.1.x/options/#boolean-flags

[chrissnyder2337]

@const-cloudinary I have updated this PR's description to reflect the change of parameters.

[chrissnyder2337]

@const-cloudinary I have just pushed an additional change to this PR to add a couple of tests and tweaked the implementation to account for a bug I found.

[chrissnyder2337]

FYI: I have updated this PR's description to note the added tests.

[const-cloudinary]

@chrissnyder2337 , thanks for the fixes and tests.
Let me just check with our PM team whether they are OK with the name of the parameter.

[const-cloudinary]

@chrissnyder2337 , after another round of discussions, having a default parameter with a true value, which practically has no sense to keep, we came to this name:
-e, --exclude-dir-name, which removes the directory name.
Hope it's not too much work for you to change it.
Sorry for confusion.

[chrissnyder2337]

@const-cloudinary I get it, naming things is hard.

I have changed the option to -e/--exclude-dir-name and updated the tests accordingly

[const-cloudinary]

Looks great!

Will wait for approval from our docs team.

[jackieros]

@const-cloudinary Reviewed help texts.

[jackieros]

@const-cloudinary - Suggest changing this help text to:

The path where you want to upload the assets. The path you specify will be pre-pended to the public IDs of the uploaded assets. You can specify a whole path, for example path1/path2/path3.

[chrissnyder2337]

@const-cloudinary @jackieros Let me know which, if not all, of the documentation suggestions to include in this PR.

[const-cloudinary]

@chrissnyder2337 Thank you very much for your contribution!

[const-cloudinary]

Fixes #64