ARTEMIS-2109: require JDK 8 for release, enforce use of JDK8 or 11+ otherwise, rename profiles for consistency and clarity, remove superflous/incorrect managed plugin versions

Update CI to only use the release profile for building examples on JDK8, use noRun profile otherwise. Does the exact same in terms of setting properties for the examples build, just doesnt engage the parent release profile which enforces JDK8.

.travis.yml

@@ -1,9 +1,19 @@
 language: java
 install: true
-jdk:
-  - openjdk8
-  - openjdk11
-  - openjdk14
+matrix:
+  include:
+    - os: linux
+      jdk: openjdk8
+      env:
+        - EXAMPLES_PROFILE="release"
+    - os: linux
+      jdk: openjdk11
+      env:
+        - EXAMPLES_PROFILE="noRun"
+    - os: linux
+      jdk: openjdk14
+      env:
+        - EXAMPLES_PROFILE="noRun"
 
 # clean out Artemis artifacts from the cache
 before_install:
@@ -16,7 +26,7 @@ script:
 - set -e
 - mvn -Dorg.apache.activemq.artemis.core.io.aio.AIOSequentialFileFactory.DISABLED=AnythingNotNull -Pfast-tests -Pextra-tests -Ptests-CI -B install -q
 - cd examples
-- mvn install -Prelease install -B -q
+- mvn install -P${EXAMPLES_PROFILE} -B -q
 
 cache:
   directories:

pom.xml

@@ -901,7 +901,7 @@
          </build>
       </profile>
       <profile>
-         <id>jdk18</id>
+         <id>jdk8</id>
          <activation>
             <jdk>1.8</jdk>
          </activation>
@@ -911,9 +911,9 @@
           </properties>
       </profile>
       <profile>
-          <id>java9on</id>
+          <id>jdk11on</id>
           <activation>
-              <jdk>[9,)</jdk>
+              <jdk>[11,)</jdk>
           </activation>
           <properties>
               <maven.compiler.source>8</maven.compiler.source>
@@ -1013,7 +1013,6 @@
                <plugin>
                   <groupId>org.apache.maven.plugins</groupId>
                   <artifactId>maven-enforcer-plugin</artifactId>
-                  <version>1.4</version>
                   <executions>
                      <execution>
                         <id>enforce-java</id>
@@ -1022,9 +1021,9 @@
                         </goals>
                         <configuration>
                            <rules>
-                              <!-- we need java8 when building the release -->
                               <requireJavaVersion>
-                                 <version>1.8.0</version>
+                                 <version>[1.8, 9)</version>
+                                 <message>JDK 8 is required when building the release</message>
                               </requireJavaVersion>
                            </rules>
                         </configuration>
@@ -1562,7 +1561,6 @@
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-enforcer-plugin</artifactId>
-           <version>1.4</version>
            <executions>
              <execution>
                <id>enforce-java</id>
@@ -1572,7 +1570,8 @@
                <configuration>
                  <rules>
                    <requireJavaVersion>
-                     <version>1.8.0</version>
+                     <version>[1.8, 9),[11,)</version>
+                     <message>You must use either JDK 8 or JDK 11+ when building</message>
                    </requireJavaVersion>
                  </rules>
                </configuration>