Add domain and raft protocol

ansible/roles/consul_server/templates/consul.hcl.j2

@@ -1,8 +1,10 @@
 datacenter          = "{{ consul_dc }}"
+domain              = "minhas.io"
 bind_addr           = "{{ ansible_default_ipv4.address }}"
 start_join          = ["{{ groups['consul_server'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | join('","') }}"]
 data_dir            = "/opt/consul"
 log_level           = "INFO"
+raft_protocol       = 3
 server              = true
 bootstrap_expect    = 3
 ui                  = true