kie-maven-plugin can't compile projects with dtables or processes

Description of problem:
If you try compiling kie-maven-project that contains dtables or processes, you get an error ClassNotFoundException (in root).

Version-Release number of selected component (if applicable):
BRMS 6.0.1 ER1

How reproducible:
Run the attached project

Steps to Reproduce:
1. download and unzip included project
2. run with 'mvn clean package -Dversion.drools="whatever version you want"'

Actual results:
BUILD FAILED and among the results there is ClassNotFoundException

Expected results:
BUILD SUCCESS

Additional info:
There is a workaroud - adding required dependencies to plugin (for decision tables it is org.drools:drools-decisiontables and for processes org.jbpm:jbpm-bpmn2).