Locally install pyzabbix before trying to configure zabbix checks

webserver/tasks/zabbix.yml

 ---
 
+- name: install pyzabbix locally for zabbix checks
+  pip:
+    name: pyzabbix
+  delegate_to: localhost
+
 - name: configure a zabbix check for this endpoint
   zabbix_check:
     zabbix_url: "{{zabbix_server}}"