Use properties for source/target, so we can adjust it based on JDK (e.g. JDK9 support 1.6 and above, so not 1.5)

its/core-it-suite/src/test/resources/mng-5338/project/pom.xml

@@ -8,7 +8,7 @@
   <packaging>jar</packaging>
 
   <name>mng5338</name>
-  <url>http://maven.apache.org</url>
+  <url>https://issues.apache.org/jira/browse/MNG-5338</url>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -18,22 +18,9 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.7</version>
+      <version>3.8.2</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
 
-  <build>
-    <pluginManagement>
-      <plugins>
-        <plugin>
-          <artifactId>maven-compiler-plugin</artifactId>
-          <configuration>
-            <source>1.5</source>
-            <target>1.5</target>
-          </configuration>
-        </plugin>
-      </plugins>
-    </pluginManagement>
-  </build>
 </project>

its/core-it-suite/src/test/resources/mng-5389-lifecycleParticipant-afterSession/extension/pom.xml

@@ -29,6 +29,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>
   </properties>
 
   <dependencies>
@@ -42,15 +44,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5530-mojo-execution-scope/extension-plugin/pom.xml

@@ -62,15 +62,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5530-mojo-execution-scope/extension/pom.xml

@@ -29,6 +29,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>
   </properties>
 
   <dependencies>
@@ -42,15 +44,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5530-mojo-execution-scope/plugin/pom.xml

@@ -30,6 +30,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>
   </properties>
 
   <dependencies>
@@ -55,15 +57,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5578-session-scope/extension-plugin/pom.xml

@@ -62,15 +62,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5578-session-scope/extension/pom.xml

@@ -29,6 +29,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>
   </properties>
 
   <dependencies>
@@ -42,15 +44,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5578-session-scope/plugin/pom.xml

@@ -30,6 +30,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>    
   </properties>
 
   <dependencies>
@@ -55,15 +57,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5640-lifecycleParticipant-afterSession/extension/pom.xml

@@ -29,6 +29,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>    
   </properties>
 
   <dependencies>
@@ -42,15 +44,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>

its/core-it-suite/src/test/resources/mng-5742-build-extension-classloader/plugin/pom.xml

@@ -30,6 +30,8 @@ under the License.
 
   <properties>
     <maven-version>3.2.1</maven-version>
+    <maven.compiler.source>1.5</maven.compiler.source>
+    <maven.compiler.target>1.5</maven.compiler.target>    
   </properties>
 
   <dependencies>
@@ -55,15 +57,6 @@ under the License.
 
   <build>
     <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.0.2</version>
-        <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>sisu-maven-plugin</artifactId>