Add ServletAPITest

src/it/servlet-api/invoker.properties

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+# install, not verify, because we want to check the artifact as we would be about to deploy it
+# release.skipTests normally set in jenkins-release profile since release:perform would do the tests
+invoker.goals=-Dstyle.color=always -ntp -Pjenkins-release -Drelease.skipTests=false clean install

src/it/servlet-api/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.jenkins-ci.plugins</groupId>
+        <artifactId>plugin</artifactId>
+        <version>@project.version@</version>
+        <relativePath/>
+    </parent>
+    <groupId>org.jenkins-ci.plugins.its</groupId>
+    <artifactId>servlet-api</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>hpi</packaging>
+    <properties>
+        <jenkins.version>2.361.4</jenkins.version>
+    </properties>
+    <repositories>
+        <repository>
+            <id>repo.jenkins-ci.org</id>
+            <url>https://repo.jenkins-ci.org/public/</url>
+        </repository>
+    </repositories>
+    <pluginRepositories>
+        <pluginRepository>
+            <id>repo.jenkins-ci.org</id>
+            <url>https://repo.jenkins-ci.org/public/</url>
+        </pluginRepository>
+    </pluginRepositories>
+    <dependencies>
+        <dependency>
+            <groupId>org.jenkins-ci.plugins</groupId>
+            <artifactId>structs</artifactId>
+            <version>1.5</version>
+        </dependency>
+    </dependencies>
+</project>

src/it/servlet-api/src/main/resources/index.jelly

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+<?jelly escape-by-default='true'?>
+<div/>

src/it/servlet-api/src/test/java/test/ServletAPITest.java

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+package test;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.jvnet.hudson.test.JenkinsRule;
+
+import hudson.security.LegacySecurityRealm;
+import jenkins.model.Jenkins;
+
+public class ServletAPITest {
+
+    @Rule
+    public final JenkinsRule rule = new JenkinsRule();
+
+    /**
+     * When having both Servlet APIs 3.1 and 4.0 in classpath, the following error
+     * is logged on server side:
+     * 
+     * <pre>
+     * WARNING	o.e.jetty.server.HttpChannel#handleException: /jenkins/j_security_check
+     * java.lang.AbstractMethodError: Receiver class org.eclipse.jetty.security.authentication.SessionAuthentication does not define or inherit an
+     * implementation of the resolved emethod 'abstract void valueBound(javax.servlet.http.HttpSessionBindingEvent)' of interface
+     * javax.servlet.http.HttpSessionBindingListener. at org.eclipse.jetty.server.session.Session.bindValue(Session.java:357)
+     * </pre>
+     * 
+     * And then on client side getting "500 Server Error for
+     * http://localhost:.../jenkins/j_security_check"
+     */
+    @Test
+    public void involveHttpSessionBindingListener() throws Exception {
+        Jenkins.get().setSecurityRealm(new LegacySecurityRealm());
+        rule.createWebClient().login("bob");
+    }
+}