playbook_sysupgrade: extend fw upgrade automation onto gateways

playbook_sysupgrade.yml

@@ -1,10 +1,15 @@
 ---
 - name: upgrade firmware on openwrt device(s)
-  hosts: accesspoints
+  hosts:
+    - accesspoints
+    - gateways
   vars:
     running_garet_profile: "{{ ansible_local['garet']['profile'] | default() }}"
     running_garet_release: "{{ ansible_local['garet']['release'] | default() }}"
-    firmware_file: "firmware/garet_{{ garet_profile }}-{{ garet_release }}.bin"
+    firmware_suffix:
+      accesspoints: "bin"
+      gateways: "img.gz"
+    firmware_file: "firmware/garet_{{ garet_profile }}-{{ garet_release }}.{{ firmware_suffix[group_names | first] }}"
   gather_facts: no
   tasks:
     - name: gather firmware version