[BUG] nvflare config does not allow @ sign in directory

[dirkpetersen]

Describe the bug

If I run nvflare config and point it to the unzipped location of my console, I get this error:

nvflare config -d ~/.nvflare/myproject/[email protected] --job_templates_dir ~/NVFlare/job_templates/

Unable to handle command: config due to: Expected '}', found '@'  (at char 90), (line:3, col:59)

If I download the console from the dashboard it will be stored as [email protected] so the unzipped folder will likely always have an @ sign in the folder name.

This should also work with an + sign in the email [email protected] as + works as a suffix that allows people to create multiple identities but work with the same email address.

[chesterxgchen]

@dirkpetersen thanks for reporting. there is no special characters treatment right now. We are using Pyhocon parser to parse. We have to see what we need to do in order to support special characters.

[chesterxgchen]

This is turn out to be an simple fix, we just need to quote the string for the pyhocon parser. I fix it in this PR:
#2607