Fix config provider to fix spec config api

CHANGELOG.md

@@ -11,3 +11,4 @@
 ### Additions and Improvements
 
 ### Bug Fixes
+- Fixed an issue with the `/eth/v1/config/spec` API not returning all previously included configuration parameters.

data/beaconrestapi/src/main/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpec.java

@@ -53,7 +53,7 @@ public GetSpec(final DataProvider dataProvider) {
   @Override
   public void handleRequest(final RestApiRequest request) throws JsonProcessingException {
     try {
-      final SpecConfigData responseContext = new SpecConfigData(configProvider.getGenesisSpec());
+      final SpecConfigData responseContext = new SpecConfigData(configProvider.getSpecConfig());
       request.respondOk(responseContext.getConfigMap());
     } catch (JsonProcessingException e) {
       String message =

data/beaconrestapi/src/test/java/tech/pegasys/teku/beaconrestapi/handlers/v1/config/GetSpecTest.java

@@ -28,7 +28,7 @@
 
 class GetSpecTest extends AbstractMigratedBeaconHandlerTest {
   private final ConfigProvider configProvider = new ConfigProvider(spec);
-  private final SpecConfigData response = new SpecConfigData(configProvider.getGenesisSpecConfig());
+  private final SpecConfigData response = new SpecConfigData(configProvider.getSpecConfig());
 
   @BeforeEach
   void setUp() {

data/provider/src/main/java/tech/pegasys/teku/api/ConfigProvider.java

@@ -30,12 +30,13 @@ public ConfigProvider(final Spec spec) {
   }
 
   public Map<String, String> getConfig() {
-    final SpecConfigData configuration = new SpecConfigData(spec.getGenesisSpecConfig());
+    final SpecConfigData configuration =
+        new SpecConfigData(spec.getSpecConfigAndParent().specConfig());
     return configuration.getConfigMap();
   }
 
-  public SpecConfig getGenesisSpec() {
-    return spec.atEpoch(UInt64.ZERO).getConfig();
+  public SpecConfig getSpecConfig() {
+    return spec.getSpecConfigAndParent().specConfig();
   }
 
   public static String formatValue(final Object v) {