Fix defaults for Cassandra's initQueryTimeout and idleTimeout

See gh-25150

Author: onobc

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cassandra/CassandraProperties.java

@@ -270,7 +270,7 @@ public static class Connection {
 		 * Timeout to use for internal queries that run as part of the initialization
 		 * process, just after a connection is opened.
 		 */
-		private Duration initQueryTimeout = Duration.ofMillis(500);
+		private Duration initQueryTimeout = Duration.ofSeconds(5);
 
 		public Duration getConnectTimeout() {
 			return this.connectTimeout;
@@ -360,7 +360,7 @@ public static class Pool {
 		/**
 		 * Idle timeout before an idle connection is removed.
 		 */
-		private Duration idleTimeout = Duration.ofSeconds(120);
+		private Duration idleTimeout = Duration.ofSeconds(5);
 
 		/**
 		 * Heartbeat interval after which a message is sent on an idle connection to make