Add kerberos auth to TestKit backend (#997)

* Add kerberos auth to TestKit backend

* Turns out kerberos expects ticket instead of credentials

* Add Feature:Auth:Kerberos Testkit feature support

Co-authored-by: Dmitriy Tverdiakov <[email protected]>

Author: robsdedude

testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/GetFeatures.java

@@ -40,7 +40,8 @@ public class GetFeatures implements TestkitRequest
             "ConfHint:connection.recv_timeout_seconds",
             "Temporary:DriverFetchSize",
             "Temporary:DriverMaxTxRetryTime",
-            "Feature:Auth:Bearer"
+            "Feature:Auth:Bearer",
+            "Feature:Auth:Kerberos"
     ) );
 
     private static final Set<String> SYNC_FEATURES = new HashSet<>( Arrays.asList(

testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/NewDriver.java

@@ -78,12 +78,15 @@ public TestkitResponse process( TestkitState testkitState )
         case "bearer":
             authToken = AuthTokens.bearer( data.authorizationToken.getTokens().get( "credentials" ) );
             break;
+        case "kerberos":
+            authToken = AuthTokens.kerberos( data.authorizationToken.getTokens().get( "credentials" ) );
+            break;
         default:
             return BackendError.builder()
                                .data( BackendError
                                               .BackendErrorBody.builder()
                                                                .msg( "Auth scheme " + data.authorizationToken.getTokens().get( "scheme" ) +
-                                                                     "not implemented" )
+                                                                     " not implemented" )
                                                                .build() )
                                .build();
         }