picketlink-federation has wrong version of dependency for jbossxacml. Version "2.0.8.Final" is not in Maven central repository nor delivered zip.
picketlink-federation is a dependency from bom file (jboss-eap-javaee7-7.0.6.GA.pom) which customers should use. That is why is important to have all dependency in Maven central repository or delivered zip.

There is currently:

    <dependency>
      <groupId>org.jboss.security</groupId>
      <artifactId>jbossxacml</artifactId>
      <version>2.0.8.Final</version>
    </dependency>

There should be

    <dependency>
      <groupId>org.jboss.security</groupId>
      <artifactId>jbossxacml</artifactId>
      <version>2.0.8.Final-redhat-6</version>
    </dependency>