enbedSlingModel.xml

    <!--Add sling Model dependencies -->
    <!-- All your existing dependencies -->
    <dependency>
      <groupId>org.apache.sling</groupId>
      <artifactId>org.apache.sling.models.api</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.sling</groupId>
      <artifactId>org.apache.sling.models.impl</artifactId>
    </dependency>
      
      <!-- Your all build config using content-package-maven-plugin and then this -->    
          <embedded>
              <groupId>org.apache.sling</groupId>
              <artifactId>org.apache.sling.models.api</artifactId>
              <target>/apps/system/install</target>
            </embedded>
            <embedded>
              <groupId>org.apache.sling</groupId>
              <artifactId>org.apache.sling.models.impl</artifactId>
              <target>/apps/system/install</target>
            </embedded>
      <!-- All other things -->