Updated default Kubernetes version to 1.20.8 (#314)

* added token helper for faster kubectl

* updated umask for TOKEN so it is writable by opc

* changed default kubernetes version to 1.20.8, updated change log

Author: hyder

CHANGELOG.adoc

@@ -7,6 +7,12 @@ All notable changes to this project are documented in this file.
 
 The format is based on {uri-changelog}[Keep a Changelog].
 
+=== Unreleased
+* Changed default Kubernetes version to v1.20.8 and removed v1.16.8, v1.17.9 from docs.
+* Added support for reserved public IP address for NAT gateway
+* Bug fix: Use correct calico file to install calico for networking policy only (#307)
+* Added support for GPU and ARM shapes (#302)
+
 = 3.2.0 (May 12, 2021)
 
 === Additions

docs/terraformoptions.adoc

@@ -574,8 +574,8 @@ admission_controller_options = {
 
 |`kubernetes_version`
 |The version of Kubernetes to provision. This is based on the available versions in OKE. By default, the latest version is selected. The use of 'LATEST' is no longer permitted in order to facilitate upgrades.
-|v1.16.8, v1.17.9, v1.18.10, v1.19.7
-|v1.19.7
+|v1.18.10, v1.19.7, v1.19.12, v1.20.8
+|v1.20.8
 
 |`node_pools`
 a|The number, shape of node pools and node_pool_size to create. Each key and tuple pair corresponds to 1 node pool.

terraform.tfvars.example

@@ -210,7 +210,7 @@ check_node_active = "none"
 
 dashboard_enabled = false
 
-kubernetes_version = "v1.19.7"
+kubernetes_version = "v1.20.8"
 
 node_pools = {
   np1 = {shape="VM.Standard.E3.Flex",ocpus=2,memory=20,node_pool_size=2,boot_volume_size=150}

variables.tf

@@ -371,7 +371,7 @@ variable "dashboard_enabled" {
 }
 
 variable "kubernetes_version" {
-  default     = "v1.19.7"
+  default     = "v1.20.8"
   description = "The version of kubernetes to use when provisioning OKE or to upgrade an existing OKE cluster to."
   type        = string
 }