Bumping version to 2.5.0-SNAPSHOT

Change-Id: I00f2584bb74d7311529d8f7ddd69b62077a28a31
diff --git a/tools/build/bazel/variables.bzl b/tools/build/bazel/variables.bzl
index e5b4ee6..744df59 100644
--- a/tools/build/bazel/variables.bzl
+++ b/tools/build/bazel/variables.bzl
@@ -1,4 +1,4 @@
-ONOS_VERSION = "2.4.0-SNAPSHOT"
+ONOS_VERSION = "2.5.0-SNAPSHOT"
 ONOS_ARTIFACT_BASE = "onos-"
 ONOS_GROUP_ID = "org.onosproject"
 ONOS_ORIGIN = "ONOS Community"