FELIX-5119 - Jaas module build fails with JDK 8

Also specifying the felix.java.version for animal sniffer plugin to work

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1717243 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/jaas/pom.xml b/jaas/pom.xml
index 74560ff..1ec392e 100644
--- a/jaas/pom.xml
+++ b/jaas/pom.xml
@@ -54,6 +54,7 @@
     <bundle.boot.file>
       ${bundle.build.name}/${project.build.finalName}-boot.jar
     </bundle.boot.file>
+    <felix.java.version>6</felix.java.version>
   </properties>
 
   <build>