Updating version to 1.8.0-SNAPSHOT

Change-Id: I6aecc891e660cb429193363d940efa1b54cb19c0
diff --git a/calendar/pom.xml b/calendar/pom.xml
index ba5ec66..720a1ef 100644
--- a/calendar/pom.xml
+++ b/calendar/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-app-samples</artifactId>
-        <version>1.7.0-SNAPSHOT</version>
+        <version>1.8.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>