This enables initializing a cluster in HA mode with an embedded DB.
https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/



When multiple masters are specified in the master group, k3s-ansible will add
the necessary flags during the initialization phase.
(i.e. --cluster-init and --server)

For the embedded HA mode to work the k3s version must be >= v1.19.1

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

This replaces the `master_ip` var by `apiserver_endpoint` for genericity. The
init service is deployed only when k3s.service is not present on the machine to
ensure idempotence.

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

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

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

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

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

K3s ha