Increase s3.max-connections from AWS default of 50 to 500

Aligns native S3FileSystem with legacy TrinoS3FileSystem

Author: grantatspothero

lib/trino-filesystem-s3/src/main/java/io/trino/filesystem/s3/S3FileSystemConfig.java

@@ -91,7 +91,7 @@ public static software.amazon.awssdk.core.retry.RetryMode getRetryMode(RetryMode
     private boolean useWebIdentityTokenCredentialsProvider;
     private DataSize streamingPartSize = DataSize.of(16, MEGABYTE);
     private boolean requesterPays;
-    private Integer maxConnections;
+    private Integer maxConnections = 500;
     private Duration connectionTtl;
     private Duration connectionMaxIdleTime;
     private Duration socketConnectTimeout;

lib/trino-filesystem-s3/src/test/java/io/trino/filesystem/s3/TestS3FileSystemConfig.java

@@ -55,7 +55,7 @@ public void testDefaults()
                 .setUseWebIdentityTokenCredentialsProvider(false)
                 .setStreamingPartSize(DataSize.of(16, MEGABYTE))
                 .setRequesterPays(false)
-                .setMaxConnections(null)
+                .setMaxConnections(500)
                 .setConnectionTtl(null)
                 .setConnectionMaxIdleTime(null)
                 .setSocketConnectTimeout(null)