Use released parent pom where possible.

git-svn-id: https://svn.apache.org/repos/asf/incubator/sling/trunk@670529 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/path-based-rtp/pom.xml b/path-based-rtp/pom.xml
index dcce1eb..4b915bb 100644
--- a/path-based-rtp/pom.xml
+++ b/path-based-rtp/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>4-incubator-SNAPSHOT</version>
+        <version>3-incubator</version>
         <relativePath>../../parent/pom.xml</relativePath>
     </parent>
 
diff --git a/simple-demo/pom.xml b/simple-demo/pom.xml
index 8b436d5..7f49db3 100644
--- a/simple-demo/pom.xml
+++ b/simple-demo/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>4-incubator-SNAPSHOT</version>
+        <version>3-incubator</version>
         <relativePath>../../parent/pom.xml</relativePath>
     </parent>
 
diff --git a/webloader/service/pom.xml b/webloader/service/pom.xml
index f9519a2..39efd25 100644
--- a/webloader/service/pom.xml
+++ b/webloader/service/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>4-incubator-SNAPSHOT</version>
+        <version>3-incubator</version>
         <relativePath>../../../parent/pom.xml</relativePath>
     </parent>
 
diff --git a/webloader/ui/pom.xml b/webloader/ui/pom.xml
index 77cab57..c340971 100644
--- a/webloader/ui/pom.xml
+++ b/webloader/ui/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.sling</groupId>
         <artifactId>sling</artifactId>
-        <version>4-incubator-SNAPSHOT</version>
+        <version>3-incubator</version>
         <relativePath>../../../parent/pom.xml</relativePath>
     </parent>