make checkstyle plugin phase configurable

Jenkinsfile

@@ -10,7 +10,9 @@ pipeline {
     LATEST_AUTHOR = sh(returnStdout: true, script: 'git show -s --pretty=%an').trim()
     LATEST_COMMIT_ID = sh(returnStdout: true, script: 'git describe --tags --long  --always').trim()
 
-    MAVEN_TEST_OPTIONS = ' '
+    // START CUSTOM ohsome-parent
+    MAVEN_TEST_OPTIONS = '-Dcheckstyle-plugin.phase=none'
+    // END CUSTOM ohsome-parent
     INFER_BRANCH_REGEX = /(^master$)/
     SNAPSHOT_BRANCH_REGEX = /(^master$)/
     RELEASE_REGEX = /^([0-9]+(\.[0-9]+)*)(-(RC|beta-|alpha-)[0-9]+)?$/

pom.xml

@@ -90,6 +90,7 @@
     <sonar.organization>giscience</sonar.organization>
     <sonar.version>3.9.0.2155</sonar.version>
     <spotbugs.version>4.2.3</spotbugs.version>
+    <checkstyle-plugin.phase>verify</checkstyle-plugin.phase>
   </properties>
 
   <build>
@@ -160,7 +161,7 @@
         <executions>
           <execution>
             <id>do-checkstyle-verification</id>
-            <phase>verify</phase>
+            <phase>${checkstyle-plugin.phase}</phase>
             <goals>
               <goal>check</goal>
             </goals>