Bumping version to 1.8-SNAPSHOT

Change-Id: Ifbc39a497bb9e41c61d9e90b7ce56aa822380b31
diff --git a/datamodel/pom.xml b/datamodel/pom.xml
index 6a8b9a6..484940e 100644
--- a/datamodel/pom.xml
+++ b/datamodel/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yang-tools</artifactId>
-        <version>1.7</version>
+        <version>1.8-SNAPSHOT</version>
     </parent>
 
     <artifactId>onos-yang-datamodel</artifactId>