refactor scala modules configuration

.travis/build-deploy.sh

@@ -26,7 +26,6 @@ elif travis_isPullRequest; then
 
     log_info "This is a pull-request build"
     ./mvnw verify $MVN_BUILD_FLAGS
-    ./mvnw clean verify $MVN_BUILD_FLAGS -pl pmd-scala -DscalaVersion=2.13
 
     regression-tester_executeDanger
 
@@ -43,7 +42,6 @@ elif travis_isPush; then
 
         # Build and deploy to ossrh / maven-central
         ./mvnw deploy -Possrh,sign,pmd-release $MVN_BUILD_FLAGS
-        ./mvnw clean deploy -Possrh,sign,pmd-release $MVN_BUILD_FLAGS -pl pmd-scala -DscalaVersion=2.13
         echo -e "\n\n"
 
         # Deploy to github releases
@@ -59,7 +57,6 @@ elif travis_isPush; then
     elif [[ "${VERSION}" == *-SNAPSHOT ]]; then
         log_info "This is a snapshot build"
         ./mvnw deploy -Possrh,sign $MVN_BUILD_FLAGS
-        ./mvnw clean deploy -Possrh,sign $MVN_BUILD_FLAGS -pl pmd-scala -DscalaVersion=2.13
         
         # Deploy to sourceforge files
         sourceforge_uploadFile "${VERSION}" "pmd-dist/target/pmd-bin-${VERSION}.zip"

pmd-scala-modules/pmd-scala/pom.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>pmd-scala</artifactId>
+    <name>PMD Scala</name>
+    <packaging>pom</packaging>
+    
+    <parent>
+        <groupId>net.sourceforge.pmd</groupId>
+        <artifactId>pmd</artifactId>
+        <version>6.25.0-SNAPSHOT</version>
+    </parent>
+    
+</project>