Fixes Secure Distributions (CNAMEs) from not being parsed

[colbyfayock]

Description

URLs that include a CNAME are failing to be parsed. This makes the cloud name optional in cases where the hostname is not res.cloudinary.com to support that pattern.

Issue Ticket Number

Related https://github.com/cloudinary-community/next-cloudinary/issues/479

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Fix or improve the documentation
• [ ] This change requires a documentation update

Checklist

• [ ] I have followed the contributing guidelines of this project as mentioned in CONTRIBUTING.md
• [ ] I have created an issue ticket for this PR
• [ ] I have checked to ensure there aren't other open Pull Requests for the same update/change?
• [ ] I have performed a self-review of my own code
• [ ] I have run tests locally to ensure they all pass
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes needed to the documentation