Add failsafe default configuration

Provides better default for integration tests. Also expand the
documentation of the maven plugin in that area.

Closes gh-4223

spring-boot-dependencies/pom.xml

@@ -2046,7 +2046,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-failsafe-plugin</artifactId>
-					<version>2.18</version>
+					<version>2.19.1</version>
 				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>

spring-boot-starters/spring-boot-starter-parent/pom.xml

@@ -61,6 +61,18 @@
 		<pluginManagement>
 			<plugins>
 				<!-- Apply more sensible defaults for user projects -->
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-failsafe-plugin</artifactId>
+					<executions>
+						<execution>
+							<goals>
+								<goal>integration-test</goal>
+								<goal>verify</goal>
+							</goals>
+						</execution>
+					</executions>
+				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-jar-plugin</artifactId>

spring-boot-tools/spring-boot-maven-plugin/src/site/apt/usage.apt.vm

@@ -231,6 +231,54 @@ spring.devtools.remote.restart.enabled=false
   Such setup can now use the {{{http://maven.apache.org/surefire/maven-failsafe-plugin/}failsafe-plugin}} to
   run your integration tests as you would expect.
 
+  You could also configure a more advanced setup to skip the integration tests when a specific property has
+  been set:
+
+---
+<properties>
+  <it.skip>false</it.skip>
+</properties>
+<build>
+  <plugins>
+    <plugin>
+      <groupId>org.apache.maven.plugins</groupId>
+      <artifactId>maven-failsafe-plugin</artifactId>
+      <configuration>
+        <skip>${it.skip}</skip>
+      </configuration>
+    </plugin>
+    <plugin>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>${project.artifactId}</artifactId>
+      <version>${project.version}</version>
+      <executions>
+        <execution>
+          <id>pre-integration-test</id>
+          <goals>
+            <goal>start</goal>
+          </goals>
+          <configuration>
+            <skip>${it.skip}</skip>
+          </configuration>
+        </execution>
+        <execution>
+          <id>post-integration-test</id>
+          <goals>
+            <goal>stop</goal>
+          </goals>
+          <configuration>
+            <skip>${it.skip}</skip>
+          </configuration>
+        </execution>
+      </executions>
+    </plugin>
+  </plugins>
+</build>
+---
+
+  If you run <<<mvn verify -Dit.skip=true>>> your integration tests will be skipped altogether.
+
+
   For more detailed examples of how to configure this goal see:
 
     * {{{./examples/it-random-port.html}Random port for integration tests}}