Bumping snapshot version to 1.8.0-SNAPSHOT

Change-Id: I4ca57b277d8ac814b8a10b107d995cb1cc4d499d
diff --git a/onos.defs b/onos.defs
index 54cfcdd..9c45f93 100644
--- a/onos.defs
+++ b/onos.defs
@@ -1,6 +1,6 @@
 ONOS_ORIGIN = 'ON.Lab'
 ONOS_GROUP_ID = 'org.onosproject'
-ONOS_VERSION = '1.7.0-SNAPSHOT'
+ONOS_VERSION = '1.8.0-SNAPSHOT'
 DEFAULT_APP_CATEGORY = 'Utility'
 ONOS_ARTIFACT_BASE = 'onos-'
 APP_PREFIX = ONOS_GROUP_ID + '.'