Permit upload of certificate and fetching SAML certificates from public SAML endpoints

[bdwilson]

Thanks for a great tool. I was hoping you could consider the following enhancements:

1. Permit the user to upload a certificate (for situations where the URL is not accessible to monitor). Yes, user would need to upload a new copy upon renewal.

2. Permit the URL to be a SAML metadata.xml endpoint (used for oauth federation). The metadata.xml file has certificates embedded in it.
   Here is an example of a project that does this. (https://github.com/devjason/saml-cert-expiration-check).

[keraattin]

Thank you for your comments and recommendations. I'll consider your recommendations