radius-client: make waiting optional

radius-client/defaults/main.yml

 ---
 
 radius_certs_dir: "{{ inventory_dir }}/files/radius-certs/"
+radius_client_wait: true

radius-client/templates/wpa_wait.sh.j2

 #!/bin/bash
+{% if radius_client_wait %}
 journalctl -u wpa_supplicant-wired@{{ ansible_default_ipv4.interface }} -b | tail -n1 | grep CONNECTED
 while [ $? == 1 ]; do
 	journalctl -u wpa_supplicant-wired@{{ ansible_default_ipv4.interface }} -b | tail -n1 | grep CONNECTED
 done
+{% endif %}