1. Ability to specify control host address, for connecting to a control plane
provisioned outside of the role.
2. Ability to specify the control host token, again for connecting to
a control plane provisioned outside of the role.
3. Included upstream changes from @nolte to define KubeConfig file
permissions.
I was receiving this error when running the task on my [Odroid HC1 running Armbian](https://www.armbian.com/odroid-hc1/):
```
TASK [xanmanning.k3s : Ensure target host architecture information is set as a fact] **************************************************************************
fatal: [odroid]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'armv7l'\n\nThe error appears to have been in '/home/jdmarble/.ansible/roles/xanmanning.k3s/tasks/download-k3s.yml': line 3, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: Ensure target host architecture information is set as a fact\n ^ here\n"}
```
I worked around the problem by overriding `k3s_arch_lookup` in my play book:
```yaml
---
- hosts: all
roles:
- role: xanmanning.k3s
k3s_arch_lookup:
armv7l:
arch: arm
suffix: "-armhf"
```
