Add LKE Changelog for v1.16.0

Author: thorner

src/content/changelog/lke-1-16-0.md

@@ -0,0 +1,17 @@
+---
+title: Linode Kubernetes Engine v1.16.0
+date: 2021-03-10T05:00:00.000Z
+version: 1.16.0
+changelog:
+  - Linode Kubernetes Engine
+---
+
+### Added
+
+* Add support for deploying Kubernetes v1.20.4
+
+### Changed
+
+* Upgrade CCM for LKE clusters to v0.3.13, which adds support for a new
+  `hostname-only-ingress` annotation
+