KEYCLOAK-6066 Be less strict when handling cookies

adapters/saml/core/src/main/java/org/keycloak/adapters/cloned/HttpClientBuilder.java

@@ -56,6 +56,8 @@ import java.util.Collections;
 import java.util.Date;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
+import org.apache.http.client.params.ClientPNames;
+import org.apache.http.client.params.CookiePolicy;
 
 /**
  * Abstraction for creating HttpClients. Allows SSL configuration.
@@ -288,6 +290,7 @@ public class HttpClientBuilder {
                 cm = new SingleClientConnManager(registry);
             }
             BasicHttpParams params = new BasicHttpParams();
+            params.setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.BROWSER_COMPATIBILITY);
 
             if (proxyHost != null) {
                 params.setParameter(ConnRoutePNames.DEFAULT_PROXY, proxyHost);