Upgrade docker-fixtures from 1.11 to 1.12

pom.xml

@@ -267,7 +267,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.13.1</version>
+      <version>4.13.2</version>
     </dependency>
     <dependency>
       <groupId>org.hamcrest</groupId>
@@ -400,7 +400,7 @@
     <dependency>
       <groupId>org.jenkins-ci.test</groupId>
       <artifactId>docker-fixtures</artifactId>
-      <version>1.11</version>
+      <version>1.12</version>
     </dependency>
     <dependency>
       <groupId>com.github.olivergondza.dumpling</groupId>
@@ -462,7 +462,7 @@
       <dependency>
         <groupId>commons-io</groupId>
         <artifactId>commons-io</artifactId>
-        <version>2.7</version>
+        <version>2.11.0</version>
       </dependency>
     </dependencies>
   </dependencyManagement>

src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/DockerAgentContainer/Dockerfile

@@ -1,4 +1,5 @@
-FROM jenkins/java:d93654cc6239
+# curl -s https://raw.githubusercontent.com/jenkinsci/docker-fixtures/master/src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/JavaContainer/Dockerfile | sha1sum | cut -c 1-12
+FROM jenkins/java:387404da3ce7
 
 RUN cd /tmp && \
     wget -nv -O - https://get.docker.com/builds/Linux/x86_64/docker-1.13.1.tgz | tar xvfz - docker/docker && \

src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/SshAgentContainer/Dockerfile

@@ -1,3 +1,4 @@
-FROM jenkins/java:d93654cc6239
+# curl -s https://raw.githubusercontent.com/jenkinsci/docker-fixtures/master/src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/JavaContainer/Dockerfile | sha1sum | cut -c 1-12
+FROM jenkins/java:387404da3ce7
 COPY *.pub /tmp
 RUN cat /tmp/*.pub >> /home/test/.ssh/authorized_keys

src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/XvncSlaveContainer/Dockerfile

@@ -1,4 +1,5 @@
-FROM jenkins/java:d93654cc6239
+# curl -s https://raw.githubusercontent.com/jenkinsci/docker-fixtures/master/src/main/resources/org/jenkinsci/test/acceptance/docker/fixtures/JavaContainer/Dockerfile | sha1sum | cut -c 1-12
+FROM jenkins/java:387404da3ce7
 RUN apt-get update && apt-get install -y vnc4server imagemagick
 
 # So it is owned by root and has the permissions vncserver seems to require:

src/test/java/core/FormValidationTest.java

@@ -23,13 +23,12 @@
  */
 package core;
 
-import hudson.util.VersionNumber;
 import org.jenkinsci.test.acceptance.junit.AbstractJUnitTest;
 import org.jenkinsci.test.acceptance.po.FormValidation;
 import org.jenkinsci.test.acceptance.po.JenkinsConfig;
 import org.jenkinsci.test.acceptance.po.ListView;
 import org.junit.Test;
-import org.openqa.selenium.Alert;
+import org.openqa.selenium.Keys;
 
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
@@ -64,6 +63,8 @@ private void jsValidation() {
         assertThat(formValidation, silent());
 
         c.numExecutors.set(-16);
+        c.numExecutors.resolve().sendKeys(Keys.TAB);
+        c.numExecutors.sleep(100L);
         formValidation = c.numExecutors.getFormValidation();
 
         String errorMessage = "Not a non-negative integer";

src/test/java/plugins/SshSlavesPluginTest.java

@@ -211,15 +211,15 @@ private void verifyUnexpectedValueForCredential(String message, CredentialsPage
         setUp();
         SshSlaveLauncher launcher = configureDefaultSSHSlaveLauncher().pwdCredentials("test", "test");
 
-        String javaPath = "/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java";
+        String javaPath = "/usr/lib/jvm/java-11-openjdk-amd64/bin/java";
         if (System.getProperty("os.arch").equals("aarch64")) {
-            javaPath = "/usr/lib/jvm/java-8-openjdk-arm64/jre/bin/java";
+            javaPath = "/usr/lib/jvm/java-11-openjdk-arm64/bin/java";
         }
         launcher.javaPath.set(javaPath);
         slave.save();
 
         verify();
-        verifyLog("java-8-openjdk");
+        verifyLog("java-11-openjdk");
     }
 
     @Test public void jvmOptions() {