We may need to use several SSO providers, so extend our
configuration to allow that.
Based on PoC from Sanne:
```
package main
import (
"net/http"
"log"
"github.com/openshift-online/ocm-sdk-go/authentication"
"github.com/openshift-online/ocm-sdk-go/logging"
)
type H struct{}
func (h *H) ServeHTTP(w http.ResponseWriter, r *http.Request) {
log.Println("HURRAY")
}
func main() {
logBuilder := logging.NewGoLoggerBuilder()
logger, err := logBuilder.Build()
if err != nil {
panic(err)
}
aH, err := authentication.NewHandler().
KeysURL("https://sso.redhat.com/auth/realms/redhat-external/protocol/openid-connect/certs").
KeysURL("https://identity.api.openshift.com/auth/realms/rhoas/protocol/openid-connect/certs").
Logger(logger).Next(&H{}).Build()
if err != nil {
panic(err)
}
log.Fatal(http.ListenAndServe(":8080", aH))
}
```
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