add get aggregate attestation request

validator/remote/src/integration-test/java/tech/pegasys/teku/validator/remote/typedef/handlers/CreateAggregateAttestationRequestElectraTest.java

@@ -52,7 +52,7 @@ public class CreateAggregateAttestationRequestElectraTest extends AbstractTypeDe
   void setupRequest() {
     createAggregateAttestationRequest =
         new CreateAggregateAttestationRequest(
-            mockWebServer.url("/"), okHttpClient, new SchemaDefinitionCache(spec), spec);
+            mockWebServer.url("/"), okHttpClient, new SchemaDefinitionCache(spec));
     responseBodyBuffer = new Buffer();
   }
 
@@ -70,7 +70,7 @@ public void getAggregateAttestation_makesExpectedRequest() throws Exception {
     mockWebServer.enqueue(new MockResponse().setResponseCode(SC_NO_CONTENT));
 
     createAggregateAttestationRequest.submit(
-        slot, attestationHashTreeRoot, Optional.of(committeeIndex));
+        slot, attestationHashTreeRoot, Optional.of(committeeIndex), spec);
 
     final RecordedRequest request = mockWebServer.takeRequest();
 
@@ -104,7 +104,7 @@ public void shouldGetAggregateAttestation() {
 
     final Optional<ObjectAndMetaData<Attestation>> maybeAttestationAndMetaData =
         createAggregateAttestationRequest.submit(
-            slot, attestation.hashTreeRoot(), Optional.of(committeeIndex));
+            slot, attestation.hashTreeRoot(), Optional.of(committeeIndex), spec);
     assertThat(maybeAttestationAndMetaData).isPresent();
     assertThat(maybeAttestationAndMetaData.get().getData())
         .isEqualTo(getAggregateAttestationResponse.getData());

validator/remote/src/integration-test/java/tech/pegasys/teku/validator/remote/typedef/handlers/CreateAggregateAttestationRequestTest.java

@@ -51,7 +51,7 @@ public class CreateAggregateAttestationRequestTest extends AbstractTypeDefReques
   void setupRequest() {
     request =
         new CreateAggregateAttestationRequest(
-            mockWebServer.url("/"), okHttpClient, new SchemaDefinitionCache(spec), spec);
+            mockWebServer.url("/"), okHttpClient, new SchemaDefinitionCache(spec));
   }
 
   @TestTemplate
@@ -60,7 +60,7 @@ public void getAggregateAttestation_makesExpectedRequest() throws Exception {
 
     mockWebServer.enqueue(new MockResponse().setResponseCode(SC_NO_CONTENT));
 
-    request.submit(slot, attestationHashTreeRoot, Optional.empty());
+    request.submit(slot, attestationHashTreeRoot, Optional.empty(), spec);
 
     final RecordedRequest request = mockWebServer.takeRequest();
     assertThat(request.getMethod()).isEqualTo("GET");
@@ -84,7 +84,7 @@ public void shouldGetAggregateAttestation() {
     mockWebServer.enqueue(new MockResponse().setResponseCode(SC_OK).setBody(mockResponse));
 
     final Optional<ObjectAndMetaData<Attestation>> maybeAttestation =
-        request.submit(slot, attestation.hashTreeRoot(), Optional.empty());
+        request.submit(slot, attestation.hashTreeRoot(), Optional.empty(), spec);
 
     assertThat(maybeAttestation).isPresent();
     assertThat(maybeAttestation.get().getData())
@@ -99,7 +99,8 @@ void handle400() {
                 request.submit(
                     dataStructureUtil.randomSlot(),
                     dataStructureUtil.randomBytes32(),
-                    Optional.empty()))
+                    Optional.empty(),
+                    spec))
         .isInstanceOf(IllegalArgumentException.class);
   }
 
@@ -110,7 +111,8 @@ void handle404() {
             request.submit(
                 dataStructureUtil.randomSlot(),
                 dataStructureUtil.randomBytes32(),
-                Optional.empty()))
+                Optional.empty(),
+                spec))
         .isEmpty();
   }
 
@@ -122,7 +124,8 @@ void handle500() {
                 request.submit(
                     dataStructureUtil.randomSlot(),
                     dataStructureUtil.randomBytes32(),
-                    Optional.empty()))
+                    Optional.empty(),
+                    spec))
         .isInstanceOf(RemoteServiceNotAvailableException.class);
   }
 }

validator/remote/src/main/java/tech/pegasys/teku/validator/remote/typedef/OkHttpValidatorTypeDefClient.java

@@ -269,8 +269,9 @@ public Optional<ObjectAndMetaData<Attestation>> createAggregate(
       final Optional<UInt64> committeeIndex) {
     final CreateAggregateAttestationRequest createAggregateAttestationRequest =
         new CreateAggregateAttestationRequest(
-            getBaseEndpoint(), getOkHttpClient(), schemaDefinitionCache, spec);
-    return createAggregateAttestationRequest.submit(slot, attestationHashTreeRoot, committeeIndex);
+            getBaseEndpoint(), getOkHttpClient(), schemaDefinitionCache);
+    return createAggregateAttestationRequest.submit(
+        slot, attestationHashTreeRoot, committeeIndex, spec);
   }
 
   public Optional<List<ValidatorLivenessAtEpoch>> sendValidatorsLiveness(

validator/remote/src/main/java/tech/pegasys/teku/validator/remote/typedef/handlers/CreateAggregateAttestationRequest.java

@@ -37,22 +37,20 @@
 
 public class CreateAggregateAttestationRequest extends AbstractTypeDefRequest {
   private final SchemaDefinitionCache schemaDefinitionCache;
-  private final Spec spec;
 
   public CreateAggregateAttestationRequest(
       final HttpUrl baseEndpoint,
       final OkHttpClient okHttpClient,
-      final SchemaDefinitionCache schemaDefinitionCache,
-      final Spec spec) {
+      final SchemaDefinitionCache schemaDefinitionCache) {
     super(baseEndpoint, okHttpClient);
     this.schemaDefinitionCache = schemaDefinitionCache;
-    this.spec = spec;
   }
 
   public Optional<ObjectAndMetaData<Attestation>> submit(
       final UInt64 slot,
       final Bytes32 attestationHashTreeRoot,
-      final Optional<UInt64> committeeIndex) {
+      final Optional<UInt64> committeeIndex,
+      final Spec spec) {
     final AttestationSchema<Attestation> attestationSchema =
         schemaDefinitionCache.atSlot(slot).getAttestationSchema().castTypeToAttestationSchema();