upgrading the parent pom since we need java 8

git-svn-id: https://svn.apache.org/repos/asf/geronimo/specs/trunk@1818655 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/geronimo-jaxrs_2.1_spec/pom.xml b/geronimo-jaxrs_2.1_spec/pom.xml
index a893eb4..a91f69a 100644
--- a/geronimo-jaxrs_2.1_spec/pom.xml
+++ b/geronimo-jaxrs_2.1_spec/pom.xml
@@ -24,7 +24,7 @@
 
   <parent>
     <groupId>org.apache.geronimo.genesis</groupId>
-    <artifactId>genesis-java7-flava</artifactId>
+    <artifactId>genesis-java8-flava</artifactId>
     <version>2.3</version>
   </parent>