[LOGGING-186] Replace custom code with ServiceLoader call (#171)

* Replace custom code with `ServiceLoader` call

* Files should end with an empty line

* Files should end with an empty line

* Comment empty block

* Comment empty block

---------

Co-authored-by: Gary Gregory <garydgregory@users.noreply.github.com>

pom.xml

@@ -391,6 +391,9 @@ under the License.
             </goals>
             <configuration>
               <runOrder>${failsafe.runorder}</runOrder>
+              <excludes>
+                <exclude>org/apache/commons/logging/serviceloader/**</exclude>
+              </excludes>
               <includes>
                 <include>**/*TestCase.java</include>
               </includes>
@@ -408,6 +411,24 @@ under the License.
               </systemPropertyVariables>
             </configuration>
           </execution>
+          <!--
+            - The ServiceLoaderTestCase uses an alternative implementation of LogFactory,
+            - therefore it requires a separate execution.
+            -->
+          <execution>
+            <id>serviceLoader-test</id>
+            <goals>
+              <goal>integration-test</goal>
+            </goals>
+            <configuration>
+              <additionalClasspathElements>
+                <additionalClasspathElement>${project.build.testOutputDirectory}/serviceloader</additionalClasspathElement>
+              </additionalClasspathElements>
+              <includes>
+                <include>org/apache/commons/logging/serviceloader/*TestCase.java</include>
+              </includes>
+            </configuration>
+          </execution>
         </executions>
       </plugin>