Adding delta feature to zbx_item

roles/lib_zabbix/library/zbx_item.py

@@ -126,6 +126,7 @@ def main():
             zabbix_type=dict(default=2, type='int'),
             value_type=dict(default='int', type='str'),
             interval=dict(default=60, type='int'),
+            delta=dict(default=0, type='int'),
             multiplier=dict(default=None, type='str'),
             description=dict(default=None, type='str'),
             units=dict(default=None, type='str'),
@@ -191,6 +192,7 @@ def main():
                   'description': module.params['description'],
                   'units': module.params['units'],
                   'delay': module.params['interval'],
+                  'delta': module.params['delta'],
                  }
 
         # Remove any None valued params

roles/lib_zabbix/tasks/create_template.yml

@@ -40,6 +40,7 @@
     applications: "{{ item.applications }}"
     zabbix_type: "{{ item.zabbix_type | default(2, True) }}"
     interval: "{{ item.interval | default(60, True) }}"
+    delta: "{{ item.delta | default(0, True) }}"
   with_items: template.zitems
   register: created_items
   when: template.zitems is defined

roles/os_zabbix/vars/template_app_zabbix_server.yml

@@ -244,6 +244,8 @@ g_template_app_zabbix_server:
      units: ''
      value_type: float
      zabbix_type: 5
+     delta: 1 # speed per second
+
    ztriggers:
    - description: "There has been unexpected output while running the housekeeping script\
        \ on the Zabbix. There are only three kinds of lines we expect to see in the output,\