oidc is invalid when jwtIssuer includes protocol

[drewwells]

jwtIssuer was included as a domain in the oidc configuration. The problem is that https:// is not valid here, so oidc can not start when a jwtIssuer is defined with https://

Example

      "domains": [
        "spire-oidc-spiffe-oidc-discovery-provider",
        "spire-oidc-spiffe-oidc-discovery-provider.spire-server",
        "spire-oidc-spiffe-oidc-discovery-provider.spire-server.svc.cluster.local",
        "https://spire-env-4.test.infoblox.com",
        "localhost"
      ],

$ k -n spire-server logs -f spire-spiffe-oidc-discovery-provider-f5874f988-sxxpv
domain "https://spire-env-4.test.infoblox.com" is not a valid domain name: idna: disallowed rune U+003A

The issue is that protocols are not allowed and jwtIssuer can be a URI https://datatracker.ietf.org/doc/html/rfc7519#section-4.1.1