DTSRD-3583 PI Test Version Config - pitestVersion added to pitest con…

…fig, pitest version vars cleanup (#923)

build.gradle

@@ -28,7 +28,10 @@ apply plugin: 'idea'
 
 def versions = [
         lombok             : '1.18.34',
+        gradlePitest       : '1.15.0',
         pitest             : '1.16.1',
+        sonarPitest        : '0.5',
+        junitPitest        : '1.2.1',
         reformLogging      : '6.1.5',
         serenity           : '2.0.76',
         springBoot         : '2.7.18',
@@ -243,7 +246,8 @@ jacocoTestReport {
 }
 
 pitest {
-    junit5PluginVersion = '1.2.1'
+    pitestVersion = versions.pitest
+    junit5PluginVersion = versions.junitPitest
     targetClasses = ['uk.gov.hmcts.reform.judicialapi.*']
     testSourceSets = [sourceSets.test]
     excludedClasses = [
@@ -467,13 +471,14 @@ dependencies {
 
     testImplementation group: 'com.github.mifmif', name: 'generex', version: '1.0.2'
 
-    testImplementation 'org.codehaus.sonar-plugins:sonar-pitest-plugin:0.5', {
+    testImplementation group: 'org.codehaus.sonar-plugins', name: 'sonar-pitest-plugin', {
         exclude group: 'junit', module: 'junit'
         exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
-    }
+    }, version: versions.sonarPitest
+
     testImplementation group: 'org.pitest', name: 'pitest', version: versions.pitest
-    testImplementation 'info.solidsoft.gradle.pitest:gradle-pitest-plugin:1.15.0'
-    testImplementation group: 'org.pitest', name: 'pitest-junit5-plugin', version: '0.16'
+    testImplementation group: 'info.solidsoft.gradle.pitest', name: 'gradle-pitest-plugin', version: versions.gradlePitest
+    testImplementation group: 'org.pitest', name: 'pitest-junit5-plugin', version: versions.junitPitest
 
     implementation(group: 'io.rest-assured', name: 'rest-assured', version: '3.3.0') {
         exclude group: "com.sun.xml.bind", module: "jaxb-osgi"