Helps address #550 and #559.
What this pull request does:
Since the certificate file name will be different between dev/staging and production, we are now adding the config/certs directory as a shared directory and using settings to indicate the file name for the .cert and .key files.
The "sul-course-test" certificate relies on the UAT MAIS API URL, while the production certificate will rely on the regular/production MAIS API URL. Settings has been updated to address this as well.
The code that makes the request to the API now relies on values in settings to (a) get the correct certificate and key files, and (b) use the correct MAIS API URL.
Helps address #550 and #559. What this pull request does:
Note, this PR will specify the production specific values for the file and API: https://github.com/sul-dlss/shared_configs/pull/2210