ansible: Ensure dhcpcd is actually installed before enabling it

ansible/roles/common_deb/tasks/main.yml

@@ -122,13 +122,21 @@
     - restart nftables
   when: nftables_default_config
 
-
 - name: setup dhcpcd
-  template:
-    src: dhcpcd.conf.j2
-    dest: /etc/dhcpcd.conf
-  notify:
-    - restart dhcpcd
+  block:
+    - name: install dhcpcd
+      apt:
+        pkg:
+          - dhcpcd5
+      notify:
+        - restart dhcpcd
+
+    - name: setup dhcpcd
+      template:
+        src: dhcpcd.conf.j2
+        dest: /etc/dhcpcd.conf
+      notify:
+        - restart dhcpcd
   when: dhcpcd
 
 - name: '{{"Install" if postfix or mail_relay is None else "Remove"}} postfix'