Starting snapshot 2.6.0-SNAPSHOT

Change-Id: I0db563adc05696da578d5b230da905f592eb8fad
diff --git a/tools/build/bazel/variables.bzl b/tools/build/bazel/variables.bzl
index 744df59..f17947b 100644
--- a/tools/build/bazel/variables.bzl
+++ b/tools/build/bazel/variables.bzl
@@ -1,4 +1,4 @@
-ONOS_VERSION = "2.5.0-SNAPSHOT"
+ONOS_VERSION = "2.6.0-SNAPSHOT"
 ONOS_ARTIFACT_BASE = "onos-"
 ONOS_GROUP_ID = "org.onosproject"
 ONOS_ORIGIN = "ONOS Community"