Add slf4j-simple to capture logs from the orchestrator.

Author: tomasz-tylenda-sonarsource

its/ruling/pom.xml

@@ -84,6 +84,13 @@
       <version>${project.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <!-- Fixes "Defaulting to no-operation (NOP) logger", which results in missing logs from the orchestrator. -->
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <version>${slf4j.version}</version>
+      <scope>test</scope>
+    </dependency>
     <!-- not a direct code dependency, but needed to download it and install it into SonarQube -->
     <dependency>
       <groupId>org.sonarsource.java</groupId>

pom.xml

@@ -113,6 +113,8 @@
     <test-java-agent-directory>${project.build.directory}/test-java-agent-libs</test-java-agent-directory>
     <jacoco-agent-jar>org.jacoco.agent-${version.jacoco.plugin}-runtime.jar</jacoco-agent-jar>
     <mockito-agent-jar>mockito-core-${mockito-core.version}.jar</mockito-agent-jar>
+
+    <slf4j.version>1.7.30</slf4j.version>
   </properties>
 
   <distributionManagement>
@@ -266,7 +268,7 @@
       <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-api</artifactId>
-        <version>1.7.30</version>
+        <version>${slf4j.version}</version>
         <scope>test</scope>
       </dependency>
       <dependency>