SLING-1205 Upgrade all projects to parent POM 8 and use OSGi provided OSGi libraries

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@885680 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index d75d734..b46f807 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>6</version>
+        <version>8</version>
         <relativePath>../../../parent/pom.xml</relativePath>
     </parent>