Polish contribution

Closes gh-4456

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/ShellProperties.java

@@ -244,14 +244,14 @@ public class ShellProperties {
 		private Integer port = 2000;
 
 		/**
-		 * Number of milliseconds after which unused connections are closed.
+		 * Number of milliseconds after user will be prompted to login again.
 		 */
-		private Integer idleTimeout = 600000;
+		private Integer authTimeout = 600000;
 
 		/**
-		 * Number of milliseconds after user will be prompted to login again.
+		 * Number of milliseconds after which unused connections are closed.
 		 */
-		private Integer authTimeout = 600000;
+		private Integer idleTimeout = 600000;
 
 		@Override
 		protected void applyToCrshShellConfig(Properties config) {

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/autoconfigure/CrshAutoConfigurationTests.java

@@ -137,13 +137,13 @@ public class CrshAutoConfigurationTests {
 		MockEnvironment env = new MockEnvironment();
 		env.setProperty("shell.ssh.enabled", "true");
 		env.setProperty("shell.ssh.auth-timeout", "300000");
-		env.setProperty("shell.ssh.idle-timeout", "300000");
+		env.setProperty("shell.ssh.idle-timeout", "400000");
 		load(env);
 
 		PluginLifeCycle lifeCycle = this.context.getBean(PluginLifeCycle.class);
 
 		assertEquals("300000", lifeCycle.getConfig().getProperty("crash.ssh.auth_timeout"));
-		assertEquals("300000", lifeCycle.getConfig().getProperty("crash.ssh.idle_timeout"));
+		assertEquals("400000", lifeCycle.getConfig().getProperty("crash.ssh.idle_timeout"));
 	}
 
 	private void load(MockEnvironment env) {