Fix yaml warnings in python scripts and tests (elastic#20606)

Author: jsoriano

auditbeat/scripts/docs_collector.py

@@ -56,7 +56,7 @@ def collect(base_paths):
 
         # Load title from fields.yml
         with open(beat_path + "/fields.yml") as f:
-            fields = yaml.load(f.read())
+            fields = yaml.load(f.read(), Loader=yaml.FullLoader)
             title = fields[0]["title"]
 
         modules_list[module] = title

filebeat/scripts/docs_collector.py

@@ -45,7 +45,7 @@ def collect(beat_name):
 
         # Load title from fields.yml
         with open(beat_path + "/fields.yml", encoding='utf_8') as f:
-            fields = yaml.load(f.read())
+            fields = yaml.load(f.read(), Loader=yaml.FullLoader)
             title = fields[0]["title"]
 
         modules_list[module] = title

libbeat/scripts/generate_fields_docs.py

@@ -106,7 +106,7 @@ def fields_to_asciidoc(input, output, beat):
 
 """.format(**dict))
 
-    docs = yaml.load(input)
+    docs = yaml.load(input, Loader=yaml.FullLoader)
 
     # fields file is empty
     if docs is None:

libbeat/tests/system/beat/common_tests.py

@@ -76,5 +76,5 @@ def test_export_config(self):
         Test that the config can be exported with `export config`
         """
         output = self.run_export_cmd("config")
-        yml = yaml.load(output)
+        yml = yaml.load(output, Loader=yaml.FullLoader)
         assert isinstance(yml, dict)

pytest.ini

@@ -8,3 +8,6 @@ markers =
 
 # Ignore setup and teardown for the timeout
 timeout_func_only = True
+
+filterwarnings =
+    error::yaml.YAMLLoadWarning

script/config_collector.py

@@ -45,7 +45,7 @@ def collect(beat_name, beat_path, full=False):
 
         # Load title from fields.yml
         with open(beat_path + "/fields.yml") as f:
-            fields = yaml.load(f.read())
+            fields = yaml.load(f.read(), Loader=yaml.FullLoader)
             title = fields[0]["title"]
 
             # Check if short config was disabled in fields.yml

winlogbeat/tests/system/winlogbeat.py

@@ -111,7 +111,7 @@ def read_events(self, config=None, expected_events=1):
 
     def read_registry(self, requireBookmark=False):
         f = open(os.path.join(self.working_dir, "data", ".winlogbeat.yml"), "r")
-        data = yaml.load(f)
+        data = yaml.load(f, Loader=yaml.FullLoader)
         self.assertIn("update_time", data)
         self.assertIn("event_logs", data)