Systemd service files should not be executable

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>

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

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

Reset role improvements

Set service file mode -x

Signed-off-by: clambin <christophe.lambin@gmail.com>

Signed-off-by: clambin <christophe.lambin@gmail.com>

support 'k3s server --data-dir'

don't try to set ipv6 forward if ipv6 not enabled

k3s_version set to latest version: v1.22.3+k3s1

Signed-off-by: Pavel Rozentsvet <pavel.rozentsvet@gmail.com>

k3s_version Version alignment

Signed-off-by: Bartosz Kazmierczak <kazmierczakbartosz97@gmail.com>

Add requirements.yml for AWX/Tower