IdPv3 CAS Protocol Update

[Tom Zeller]

> https://github.com/serac/shibboleth-idp-ext-cas

To build, I deployed idp-war, but idp-war-overlay/pom.xml needs to be updated :

diff --git a/idp-war-overlay/pom.xml b/idp-war-overlay/pom.xml

   <dependencies>
     <dependency>
-      <groupId>net.shibboleth</groupId>
+      <groupId>net.shibboleth.idp</groupId>
       <artifactId>idp-cas-impl</artifactId>
       <version>${project.version}</version>
     </dependency>
       <groupId>net.shibboleth.idp</groupId>
       <artifactId>idp-war</artifactId>
       <version>${shib.version}</version>
+      <type>war</type>
     </dependency>
   </dependencies>
 </project>