Update parent pom version to 2.6.0

Update parent pom version to Montreal / ODL Argon version (2.6.0)

Issue-ID: CCSDK-3928
Signed-off-by: Dan Timoney <dtimoney@att.com>
Change-Id: Ie073750372797d80f144351a3e4e1cad63291eb9
diff --git a/pom.xml b/pom.xml
index e99bd87..65a26fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.onap.ccsdk.parent</groupId>
         <artifactId>odlparent-lite</artifactId>
-        <version>2.5.4</version>
+        <version>2.6.0</version>
         <relativePath/>
     </parent>