Add support for wireless connections

WPA-PSK and WPA-EAP are supported. Uses existing 802.1x features of the role.
Added extra functionality to ArgValidatorStr to enforce a min and max length.

examples/wireless_wpa_psk.yml

@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: BSD-3-Clause
+---
+- hosts: network-test
+  vars:
+    network_connections:
+      - name: wlan0
+        type: wireless
+        wireless:
+          ssid: "My WPA2-PSK Network"
+          key_mgmt: "wpa-psk"
+          # recommend vault encrypting the wireless password
+          # see https://docs.ansible.com/ansible/latest/user_guide/vault.html
+          password: "p@55w0rD"