##### SUMMARY
`esc_period` is mandatory even with `state: absent` - should be optional in that case.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
zabbix_action

##### ANSIBLE VERSION
latest

##### CONFIGURATION
Not relevant.

##### OS / ENVIRONMENT
Not relevant.

##### STEPS TO REPRODUCE
```yaml
  - name: "Report problems to Zabbix administrators"
    event_source: 'trigger'
    state: absent
```

##### EXPECTED RESULTS
Action, if exists, is removed.

##### ACTUAL RESULTS
```paste below
"msg": "missing required arguments: esc_period"
```
"""Get action by name
        Args:
            name: Name of the action.
        Returns:
            dict: Zabbix action
        """
        try:
            action_list = self._zapi.action.get({
                'output': 'extend',
                'selectInventory': 'extend',
                'filter': {'name': [name]}
            })
            if len(action_list) < 1:
                self._module.fail_json(msg="Action not found: " % name)
            else:
                return action_list[0]
        except Exception as e:
            self._module.fail_json(msg="Failed to get ID of '%s': %s" % (name, e))
    def get_host_by_host_name(self, host_name):