Add OIDC CA ConfigMap to Kiali when using custom SSO CA
General MR
Summary
This MR adds a new CM to Kiali as defined in their docs to allow the user to specify a custom CA for their SSO IdP.
For Issue
Closes #1564 (closed)
Relevant logs/screenshots
I do not have any specific logs besides "it now works." To reproduce, create a self-signed certificate and assign it to Keycloak. Then, add the self-signed CA cert as sso.certificateAuthority.cert
, and see that Kiali OIDC works.