Reset role improvements

We need to compute what mountpoints would be unmounted even when running with
--check

Signed-off-by: Julien DOCHE <julien.doche@gmail.com>

If the k3s binary is launched after the deletion of `/var/lib/rancher/k3s`, k3s
will automatically create this directory. This change deletes the k3s binary
first so that it cannot be called after `/var/lib/rancher/k3s` is deleted

Signed-off-by: Julien DOCHE <julien.doche@gmail.com>

Reorganize the filesystem umount order.

Fix CI with new ansible 2.10 package

Signed-off-by: Julien DOCHE <julien.doche@gmail.com>

Revert "Add Alpine Linux configuration"

Add Alpine Linux configuration

* Clean /var/lib/kubelet before /var/lib/rancher/k3s.
* Umount the filesystem tree in reverse order, to ensure the root
  is umounted last.

Signed-off-by: Staf Wagemakers <staf@wagemakers.be>

Signed-off-by: Jiayi Hu <jiayi.ghu@gmail.com>

Correct repo path in downloading URL

Fix #102, use k3s-io/k3s instead of rancher/k3s

Signed-off-by: kopwei <kopkop@gmail.com>

Moved Raspberry Pi specifics settings to raspberrypi role

Fix umount_with_children typo

Use checksum with get_url

When the checksum is used there is no need to delete the binary first, 
as it will be compared to the checksum and downloaded and replaced only 
as needed.

* use handler for the reboot
* removed ARM cpu detection

Fixed Raspbian detection on 64-bit kernel, made reboot only do so if needed

Fix cgroups on ubuntu x86 (Issue 40)

reset role updated to killall containerd daemons and umount k3s filesystems

Allow to configure the agent as well

Fix Raspbian role to run correctly on Python 3.x (e.g. Ubuntu 20.04) Ansible host

Fixes: #56