Use ${project.artifactId} insetad of ${artifactId}

 * ${artifactId} is deprecated and maven is showing
   warning
[DROOLS-625] parse and register passive patterns
Merge branch 'master' of github.com:droolsjbpm/drools
[DROOLS-611] Initial abstract fact and property metaclasses
[DROOLS-611] Initial abstract fact and property metaclasses
[DROOLS-614] Traits should map non-accessor methods
[DROOLS-615] Composite PackageDescrs ignore declared enums
Separate TraitHelper and DefaultKnowledgeHelper
Support metadata and metaclasses. Integrate traits and TMS
[DROOLS-614] Traits should map non-accessor methods
Support metadata and metaclasses
Integrate traits and TMS
Support metadata and metaclasses
[DROOLS-621] DrlDumper does not output traits
[DROOLS-622] DrlDumper does not output enum declarations
Metadata