VOL-1497 : Add more control to kv/memory access

- Added kv locking mechanism (etcd only)
- (watch) control path access whenever possible
- (watch) use a transaction for updates and merge with memory
- cleaned up vendoring
- misc changes to fix exceptions found along the way

Amendments:

- Copyright header got removed in auto-generated file
- Changed default locking to false for KV list operation
- Updated backend api to allow the passing of locking parameter

Change-Id: Ie1a55d3ca8b9d92ae71a85ce42bb22fcf1419e2c
diff --git a/vendor/k8s.io/klog/.travis.yml b/vendor/k8s.io/klog/.travis.yml
index fc0d2ca..0f508da 100644
--- a/vendor/k8s.io/klog/.travis.yml
+++ b/vendor/k8s.io/klog/.travis.yml
@@ -1,4 +1,5 @@
 language: go
+go_import_path: k8s.io/klog
 dist: xenial
 go:
   - 1.9.x