Update helm chart version. Add kubernetes quickstart info: (#156)

## Description


This uses the latest helm chart available and points users to the helm chart repo doc for kubernetes with helm deployments.

## Why is this needed



Fixes: #

## How Has This Been Tested?





## How are existing users impacted? What migration steps/scripts do we need?





## Checklist:

I have:

- [ ] updated the documentation and/or roadmap (if required)
- [ ] added unit or e2e tests
- [ ] provided instructions on how to upgrade

deploy/infrastructure/vagrant/.env

@@ -11,4 +11,4 @@ USE_POSTGRES=
 USE_HELM=true
 
 # https://github.com/tinkerbell/charts/pkgs/container/charts%2Fstack
-HELM_CHART_VERSION=0.1.1
+HELM_CHART_VERSION=0.1.2

deploy/infrastructure/vagrant/Vagrantfile

@@ -16,7 +16,7 @@ MACHINE1_IP = ENV["MACHINE1_IP"] || "192.168.56.43"
 MACHINE1_MAC = (ENV["MACHINE1_MAC"] || "08:00:27:9E:F5:3A").downcase
 USE_POSTGRES = ENV["USE_POSTGRES"] || ""
 USE_HELM = ENV["USE_HELM"] || ""
-HELM_CHART_VERSION = ENV["HELM_CHART_VERSION"] || "0.1.1"
+HELM_CHART_VERSION = ENV["HELM_CHART_VERSION"] || "0.1.2"
 HELM_LOADBALANCER_INTERFACE = ENV["HELM_LOADBALANCER_INTERFACE"] || "eth1"
 STACK_OPT = "compose/"
 STACK_BASE_DIR = "../../stack/"

docs/quickstarts/KUBERNETES.md

@@ -1,3 +1,3 @@
 # Quick start guide for Kubernetes
 
-> coming soon...
+See the [README.md](https://github.com/tinkerbell/charts/tree/main/tinkerbell/stack) in the Helm chart repository for more information on how to use the Helm chart.