JwksInfo provides values resulting from parsing a jwks URI.
ParseJwksURI parses the input URI and returns the corresponding hostname, port, and whether SSL is used. URI must start with "http://" or "https://", which corresponding to "http" or "https" scheme. Port number is extracted from URI if available (i.e from postfix :<port>, eg. ":80"), or assigned to a default value based on URI scheme (80 for http and 443 for https). Port name is set to URI scheme value. Note: this is to replace [buildJWKSURIClusterNameAndAddress] (https://github.com/istio/istio/blob/master/pilot/pkg/proxy/envoy/v1/mixer.go#L401), which is used for the old EUC policy.