1) For every dependency on 
        <dependency>
          <groupId>org.jboss.spec.javax.servlet</groupId>
          <artifactId>jboss-servlet-api_3.0_spec</artifactId>
        </dependency>
change it into
        <dependency>
          <groupId>org.jboss.spec.javax.servlet</groupId>
          <artifactId>jboss-servlet-api_3.0_spec</artifactId>
          <scope>provided</scope>
        </dependency>

Note: not in the parent pom: the parent pom never declares <scope>

2) For every dependency on 
        <dependency>
          <groupId>org.jboss.spec.javax.servlet.jsp</groupId>
          <artifactId>jboss-jsp-api_2.2_spec</artifactId>
        </dependency>
change it into
        <dependency>
          <groupId>org.jboss.spec.javax.servlet.jsp</groupId>
          <artifactId>jboss-jsp-api_2.2_spec</artifactId>
          <scope>provided</scope>
        </dependency>

3) In dashboard builder (and potentially other projects), there are several modules with java imports of servlet/jsp stuff but don't have a direct dependency to it (instead they rely on it through a transitive dependencies - which is against maven conventions).
Add a direct provided dependency on servlet and/or jsp for those to avoid compile errors.

4) The generic wars will no longer contain the servlet/jsp API's (that's a good thing). So it will be no longer needed to these exclude them in assembly-*.xml's.
Remove this from those assembly xml files:
                    <exclude>WEB-INF/lib/servlet-api-*.jar</exclude>
                    <exclude>WEB-INF/lib/jboss-servlet-api_*.jar</exclude>
                    <exclude>WEB-INF/lib/jsp-api-*.jar</exclude>
                    <exclude>WEB-INF/lib/jboss-jsp-api_*.jar</exclude>