Update regions_by_endpoint for AWS sdk upgrade.

Also add test to ensure the file has at least one entry for each region
so that it is easy to spot missing regions in future upgrades.

Relates: elastic#131050

Author: ywangd

modules/repository-s3/src/main/resources/org/elasticsearch/repositories/s3/regions_by_endpoint.txt

@@ -6,6 +6,10 @@ ap-east-1          s3-fips.ap-east-1.amazonaws.com
 ap-east-1          s3-fips.dualstack.ap-east-1.amazonaws.com
 ap-east-1          s3.ap-east-1.amazonaws.com
 ap-east-1          s3.dualstack.ap-east-1.amazonaws.com
+ap-east-2          s3-fips.ap-east-2.amazonaws.com
+ap-east-2          s3-fips.dualstack.ap-east-2.amazonaws.com
+ap-east-2          s3.ap-east-2.amazonaws.com
+ap-east-2          s3.dualstack.ap-east-2.amazonaws.com
 ap-northeast-1     s3-fips.ap-northeast-1.amazonaws.com
 ap-northeast-1     s3-fips.dualstack.ap-northeast-1.amazonaws.com
 ap-northeast-1     s3.ap-northeast-1.amazonaws.com
@@ -56,6 +60,14 @@ aws-iso-b-global   s3-fips.aws-iso-b-global.sc2s.sgov.gov
 aws-iso-b-global   s3-fips.dualstack.aws-iso-b-global.sc2s.sgov.gov
 aws-iso-b-global   s3.aws-iso-b-global.sc2s.sgov.gov
 aws-iso-b-global   s3.dualstack.aws-iso-b-global.sc2s.sgov.gov
+aws-iso-e-global   s3-fips.aws-iso-e-global.cloud.adc-e.uk
+aws-iso-e-global   s3-fips.dualstack.aws-iso-e-global.cloud.adc-e.uk
+aws-iso-e-global   s3.aws-iso-e-global.cloud.adc-e.uk
+aws-iso-e-global   s3.dualstack.aws-iso-e-global.cloud.adc-e.uk
+aws-iso-f-global   s3-fips.aws-iso-f-global.csp.hci.ic.gov
+aws-iso-f-global   s3-fips.dualstack.aws-iso-f-global.csp.hci.ic.gov
+aws-iso-f-global   s3.aws-iso-f-global.csp.hci.ic.gov
+aws-iso-f-global   s3.dualstack.aws-iso-f-global.csp.hci.ic.gov
 aws-iso-global     s3-fips.aws-iso-global.c2s.ic.gov
 aws-iso-global     s3-fips.dualstack.aws-iso-global.c2s.ic.gov
 aws-iso-global     s3.aws-iso-global.c2s.ic.gov
@@ -76,6 +88,10 @@ cn-north-1         s3.cn-north-1.amazonaws.com.cn
 cn-north-1         s3.dualstack.cn-north-1.amazonaws.com.cn
 cn-northwest-1     s3.cn-northwest-1.amazonaws.com.cn
 cn-northwest-1     s3.dualstack.cn-northwest-1.amazonaws.com.cn
+eusc-de-east-1     s3-fips.eusc-de-east-1.amazonaws.eu
+eusc-de-east-1     s3-fips.dualstack.eusc-de-east-1.amazonaws.eu
+eusc-de-east-1     s3.eusc-de-east-1.amazonaws.eu
+eusc-de-east-1     s3.dualstack.eusc-de-east-1.amazonaws.eu
 eu-central-1       s3-fips.dualstack.eu-central-1.amazonaws.com
 eu-central-1       s3-fips.eu-central-1.amazonaws.com
 eu-central-1       s3.dualstack.eu-central-1.amazonaws.com

modules/repository-s3/src/test/java/org/elasticsearch/repositories/s3/RegionFromEndpointGuesserTests.java

@@ -9,6 +9,11 @@
 
 package org.elasticsearch.repositories.s3;
 
+import software.amazon.awssdk.endpoints.Endpoint;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.s3.endpoints.S3EndpointParams;
+import software.amazon.awssdk.services.s3.endpoints.internal.DefaultS3EndpointProvider;
+
 import org.elasticsearch.core.Nullable;
 import org.elasticsearch.test.ESTestCase;
 
@@ -23,6 +28,14 @@ public void testRegionGuessing() {
         assertRegionGuess("random.endpoint.internal.net", null);
     }
 
+    public void testHasEntryForEachRegion() {
+        final var defaultS3EndpointProvider = new DefaultS3EndpointProvider();
+        for (var region : Region.regions()) {
+            final Endpoint endpoint = safeGet(defaultS3EndpointProvider.resolveEndpoint(S3EndpointParams.builder().region(region).build()));
+            assertNotNull(region.id(), RegionFromEndpointGuesser.guessRegion(endpoint.url().toString()));
+        }
+    }
+
     private static void assertRegionGuess(String endpoint, @Nullable String expectedRegion) {
         assertEquals(endpoint, expectedRegion, RegionFromEndpointGuesser.guessRegion(endpoint));
     }