Switch to parent pom 26

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1722720 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 2821089..2ffe726 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>25</version>
+        <version>26</version>
         <relativePath/>
     </parent>
 
@@ -42,6 +42,10 @@
         <url>http://svn.apache.org/viewvc/sling/trunk/installer/providers/file/</url>
     </scm>
 
+    <properties>
+        <sling.java.version>7</sling.java.version>
+    </properties>
+    
     <build>
         <plugins>