Limit transitive dependencies.

AeroGear controller currently has the following dependency:

<groupId>org.jboss.spec</groupId>
<artifactId>jboss-javaee-6.0</artifactId>
<version>1.0.0.Final</version>
<type>pom</type>
<scope>provided</scope>

Since the scope if provided this is not an issue for deployment but during development it might lead to thinking one has access to APIs that are might not be available during deployment.

Also, many of the dependencies don't make sense for aerogear controller and this task suggests to either exclude the ones that we don't want or just include the ones we do.