Use safe_load to load yaml

Replad `yaml.load` with `yaml.safe_load`

lib/ansible/modules/network/aci/aci_rest.py

@@ -355,7 +355,7 @@ def main():
         elif payload and isinstance(payload, str) and HAS_YAML:
             try:
                 # Validate YAML/JSON string
-                payload = json.dumps(yaml.load(payload))
+                payload = json.dumps(yaml.safe_load(payload))
             except Exception as e:
                 module.fail_json(msg='Failed to parse provided JSON/YAML content: %s' % to_text(e), exception=to_text(e), payload=payload)
     elif rest_type == 'xml' and HAS_LXML_ETREE:

lib/ansible/modules/network/aos/aos_blueprint_param.py

@@ -201,7 +201,7 @@ def get_collection_from_param_map(module, aos):
             module.fail_json(msg="Python library Yaml is mandatory to use 'param_map'")
 
         try:
-            param_map = yaml.load(param_map_json)
+            param_map = yaml.safe_load(param_map_json)
         except:
             module.fail_json(msg="Unable to parse param_map information")
 

lib/ansible/plugins/filter/network.py

@@ -78,7 +78,7 @@ def parse_cli(output, tmpl):
     except ImportError as exc:
         raise AnsibleError(str(exc))
 
-    spec = yaml.load(open(tmpl).read())
+    spec = yaml.safe_load(open(tmpl).read())
     obj = {}
 
     for name, attrs in iteritems(spec['keys']):