[SEBA-412] Automated reformat of Python code

Passes of modernize, autopep8, black, then check with flake8

flake8 + manual fixes:
  lib/xos-config
  lib/xos-kafka
  lib/xos-util
  xos/coreapi
  xos/api
  xos/xos_client

Change-Id: Ib23cf84cb13beb3c6381fa0d79594dc9131dc815
diff --git a/lib/xos-genx/xosgenx/jinja2_extensions/checklib.py b/lib/xos-genx/xosgenx/jinja2_extensions/checklib.py
index a61f7ca..db61f01 100644
--- a/lib/xos-genx/xosgenx/jinja2_extensions/checklib.py
+++ b/lib/xos-genx/xosgenx/jinja2_extensions/checklib.py
@@ -1,4 +1,3 @@
-
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,62 +14,67 @@
 
 import ast
 
+
 def xproto_check_synchronizer(m):
     try:
-        sync_step_path = 'synchronizer/steps/sync_%s.py'%m['name'].lower()
+        sync_step_path = "synchronizer/steps/sync_%s.py" % m["name"].lower()
         sync_step = open(sync_step_path).read()
     except IOError:
-        return '510 Model needs a sync step %s'%sync_step_path
+        return "510 Model needs a sync step %s" % sync_step_path
 
     try:
         sync_step_ast = ast.parse(sync_step)
     except SyntaxError:
-        return '511 Could not parse sync step %s'%sync_step_path
+        return "511 Could not parse sync step %s" % sync_step_path
 
-    classes = filter(lambda x:isinstance(x, ast.ClassDef), sync_step_ast.body)
+    classes = filter(lambda x: isinstance(x, ast.ClassDef), sync_step_ast.body)
     found_sync_step_class = False
 
     for c in classes:
         base_names = [v.id for v in c.bases]
-        if 'SyncStep' in base_names or 'SyncInstanceUsingAnsible' in base_names:
-            attributes = filter(lambda x:isinstance(x, ast.Assign), c.body)
+        if "SyncStep" in base_names or "SyncInstanceUsingAnsible" in base_names:
+            attributes = filter(lambda x: isinstance(x, ast.Assign), c.body)
             for a in attributes:
                 target_names = [t.id for t in a.targets]
                 values = a.value.elts if isinstance(a.value, ast.List) else [a.value]
                 value_names = [v.id for v in values]
 
-                if 'observes' in target_names and m['name'] in value_names:
+                if "observes" in target_names and m["name"] in value_names:
                     found_sync_step_class = True
                     break
 
     if not found_sync_step_class:
-        return '512 Synchronizer needs a sync step class with an observes field containing %s'%m['name']
+        return (
+            "512 Synchronizer needs a sync step class with an observes field containing %s"
+            % m["name"]
+        )
     else:
-        return '200 OK'
+        return "200 OK"
 
 
 def xproto_check_policy(m):
     try:
-        model_policy_path = 'synchronizer/model_policies/model_policy_%s.py'%m['name'].lower()
+        model_policy_path = (
+            "synchronizer/model_policies/model_policy_%s.py" % m["name"].lower()
+        )
         model_policy = open(model_policy_path).read()
     except IOError:
-        return '510 Model needs a model policy %s'%model_policy_path
+        return "510 Model needs a model policy %s" % model_policy_path
 
     try:
         model_policy_ast = ast.parse(model_policy)
     except SyntaxError:
-        return '511 Could not parse sync step %s'%model_policy_path
+        return "511 Could not parse sync step %s" % model_policy_path
 
-    classes = filter(lambda x:isinstance(x, ast.ClassDef), model_policy_ast.body)
+    classes = filter(lambda x: isinstance(x, ast.ClassDef), model_policy_ast.body)
     found_model_policy_class = False
     for c in classes:
         base_names = [v.id for v in c.bases]
-        if 'Policy' in base_names or 'TenantWithContainerPolicy' in base_names:
+        if "Policy" in base_names or "TenantWithContainerPolicy" in base_names:
             found_model_policy_class = True
             break
 
     if not found_model_policy_class:
-        return '513 Synchronizer needs a model policy class'
+        return "513 Synchronizer needs a model policy class"
     else:
-        return '200 OK'
-
+        return "200 OK"