Zabbix inventory improvement (#42669)

* Add validate_certs option to zabbix inventory

* Add validation option

* Fix pep8

* Add changelog

changelogs/fragments/42669-add_ssl_zabbix_inventory.yaml

@@ -0,0 +1,4 @@
+---
+minor_changes:
+  - Added capability to skip ssl verification 
+    on zabbix host with dynamic inventory

contrib/inventory/zabbix.ini

@@ -9,3 +9,6 @@ server = http://zabbix.example.com/zabbix
 # Login
 username = admin
 password = zabbix
+
+# Verify the server's SSL certificate
+validate_certs = True

contrib/inventory/zabbix.py

@@ -73,6 +73,10 @@ class ZabbixInventory(object):
             self.zabbix_username = config.get('zabbix', 'username')
         if config.has_option('zabbix', 'password'):
             self.zabbix_password = config.get('zabbix', 'password')
+        # ssl certs
+        if config.has_option('zabbix', 'validate_certs'):
+            if config.get('zabbix', 'validate_certs') in ['false', 'False', False]:
+                self.validate_certs = False
 
     def read_cli(self):
         parser = argparse.ArgumentParser()
@@ -118,6 +122,7 @@ class ZabbixInventory(object):
         self.zabbix_server = None
         self.zabbix_username = None
         self.zabbix_password = None
+        self.validate_certs = True
         self.meta = {}
 
         self.read_settings()
@@ -125,7 +130,7 @@ class ZabbixInventory(object):
 
         if self.zabbix_server and self.zabbix_username:
             try:
-                api = ZabbixAPI(server=self.zabbix_server)
+                api = ZabbixAPI(server=self.zabbix_server, validate_certs=self.validate_certs)
                 api.login(user=self.zabbix_username, password=self.zabbix_password)
             except BaseException as e:
                 print("Error: Could not login to Zabbix server. Check your zabbix.ini.", file=sys.stderr)