Run payload signing tests

We don't force payload signing for `http` endpoints, but it's possible
to enable payload signing now by for `https` endpoints.

Author: dagnir

test/s3-tests/src/it/java/software/amazon/awssdk/services/s3/regression/upload/UploadAsyncRegressionTesting.java

@@ -57,12 +57,8 @@ void putObject(UploadConfig config) throws Exception {
         Assumptions.assumeFalse(config.getBodyType() == BodyType.CONTENT_PROVIDER_WITH_LENGTH,
                                 "No way to create AsyncRequestBody by giving both an Publisher and the content length");
 
-        // Payload signing doesn't work correctly for async java based
-        // TODO(sra-identity-auth) remove when chunked encoding support is added in async code path
-        Assumptions.assumeFalse(config.isPayloadSigning()
-                                // MRAP requires body signing
-                                || config.getBucketType() == BucketType.MRAP,
-                                "Async payload signing doesn't work with Java based clients");
+        Assumptions.assumeFalse(config.getBucketType() == BucketType.MRAP,
+                                "Async does not support currently Sigv4a");
 
         // Async java based clients don't support unknown content-length bodies
         Assumptions.assumeTrue(config.getBodyType().isContentLengthAvailable(),