Fix sporadic java.net.SocketTimeoutException (multiple test cases) under JDK-21 (#694) (#696)

* Fix sporadic java.net.SocketTimeoutException (multiple test cases) under JDK-21



* Use -XX:UseAVX=1 instead of completely disabling



* Bump REST client timeout to 90s



---------



(cherry picked from commit 94badf1)

Signed-off-by: Andriy Redko <drreta@gmail.com>
Signed-off-by: opensearch-ci-bot <opensearch-infra@amazon.com>
Co-authored-by: Andriy Redko <drreta@gmail.com>
Co-authored-by: Medha Srivatsa <medha.srivatsa@gmail.com>

Author: 3 people

src/testFixtures/java/org/opensearch/knn/ODFERestTestCase.java

@@ -57,6 +57,11 @@ protected String getProtocol() {
         return isHttps() ? "https" : "http";
     }
 
+    @Override
+    protected Settings restClientSettings() {
+        return Settings.builder().put(super.restClientSettings()).put(CLIENT_SOCKET_TIMEOUT, "90s").build();
+    }
+
     @Override
     protected RestClient buildClient(Settings settings, HttpHost[] hosts) throws IOException {
         RestClientBuilder builder = RestClient.builder(hosts);