usergrid/usergrid — pull request #162 by Nakomis (2014-05-20 15:07:24+00:00)
Title: Add corepersistence to pom

/stack/pom.xml was missing corepersisence module, causing build failure if corepersistence wasn't previously built. To reproduce:

```
rm -rf ~/.m2/repository/org/apache/usergrid/*/2.0.0-SNAPSHOT
cd stack
mvn clean install -DskipTests
```

Also added module names for consistency