Allowlist known blocking methods from BlockHound

test/service-test-utils/src/main/java/software/amazon/awssdk/testutils/service/BlockHoundAllowlist.java

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+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package software.amazon.awssdk.testutils.service;
+
+import reactor.blockhound.BlockHound;
+import reactor.blockhound.integration.BlockHoundIntegration;
+
+/**
+ * Implements {@link BlockHoundIntegration} to explicitly allow SDK calls that are known to be blocking. Some calls (with an
+ * associated tracking issue) may wrongly block, but we allow-list them so that existing integration tests will continue to pass
+ * and so that we preserve visibility on future regression detection.
+ * <p>
+ * https://github.com/reactor/BlockHound/blob/master/docs/custom_integrations.md
+ */
+public class BlockHoundAllowlist implements BlockHoundIntegration {
+    @Override
+    public void applyTo(BlockHound.Builder builder) {
+        // https://github.com/aws/aws-sdk-java-v2/issues/2145
+        builder.allowBlockingCallsInside(
+            "software.amazon.awssdk.http.nio.netty.internal.BetterSimpleChannelPool",
+            "close"
+        );
+
+        // https://github.com/aws/aws-sdk-java-v2/issues/2360
+        builder.allowBlockingCallsInside(
+            "software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider",
+            "getToken"
+        );
+    }
+}

test/service-test-utils/src/main/resources/META-INF/services/reactor.blockhound.integration.BlockHoundIntegration

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+#
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License").
+# You may not use this file except in compliance with the License.
+# A copy of the License is located at
+#
+#  http://aws.amazon.com/apache2.0
+#
+# or in the "license" file accompanying this file. This file is distributed
+# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+# express or implied. See the License for the specific language governing
+# permissions and limitations under the License.
+#
+
+software.amazon.awssdk.testutils.service.BlockHoundAllowlist