Apply flatten-maven-plugin to assertj-core and assertj-guava (#3311)

Author: scordio

assertj-bom/pom.xml

@@ -35,8 +35,6 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>flatten-maven-plugin</artifactId>
-        <version>1.5.0</version>
-        <inherited>false</inherited>
         <executions>
           <execution>
             <id>flatten</id>

assertj-core/pom.xml

@@ -458,6 +458,32 @@
         ]]></bottom>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>flatten-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>flatten</id>
+            <phase>process-resources</phase>
+            <goals>
+              <goal>flatten</goal>
+            </goals>
+            <configuration>
+              <flattenMode>ossrh</flattenMode>
+              <pomElements>
+                <build>remove</build>
+              </pomElements>
+            </configuration>
+          </execution>
+          <execution>
+            <id>flatten-clean</id>
+            <phase>clean</phase>
+            <goals>
+              <goal>clean</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.pitest</groupId>
         <artifactId>pitest-maven</artifactId>

assertj-guava/pom.xml

@@ -202,6 +202,32 @@
         ]]></bottom>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>flatten-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>flatten</id>
+            <phase>process-resources</phase>
+            <goals>
+              <goal>flatten</goal>
+            </goals>
+            <configuration>
+              <flattenMode>ossrh</flattenMode>
+              <pomElements>
+                <build>remove</build>
+              </pomElements>
+            </configuration>
+          </execution>
+          <execution>
+            <id>flatten-clean</id>
+            <phase>clean</phase>
+            <goals>
+              <goal>clean</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>nexus-staging-maven-plugin</artifactId>

pom.xml

@@ -178,6 +178,11 @@
             <goals>deploy</goals>
           </configuration>
         </plugin>
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>flatten-maven-plugin</artifactId>
+          <version>1.5.0</version>
+        </plugin>
         <plugin>
           <groupId>org.sonarsource.scanner.maven</groupId>
           <artifactId>sonar-maven-plugin</artifactId>