Bump hacking to newer version

Our hacking module is ancient and makes Python 3.6's f-strings to fail
PEP8 check. This commit bumps hacking to newer version and fixes
violations found by it.

Change-Id: If8769f7657676d71bcf84c08108e728836071425

kuryr_kubernetes/controller/drivers/utils.py

@@ -349,7 +349,7 @@ def match_expressions(expressions, labels):
                 label_value = labels.get(str(exp['key']), None)
                 if exp_op == constants.K8S_OPERATOR_IN:
                     if label_value is None or label_value not in exp_values:
-                            return False
+                        return False
                 elif exp_op == constants.K8S_OPERATOR_NOT_IN:
                     if label_value in exp_values:
                         return False
@@ -373,7 +373,7 @@ def match_labels(crd_labels, labels):
     for crd_key, crd_value in crd_labels.items():
         label_value = labels.get(crd_key, None)
         if not label_value or crd_value != label_value:
-                return False
+            return False
     return True
 
 

kuryr_kubernetes/utils.py

@@ -321,9 +321,8 @@ def get_endpoints_link(service):
     link_parts = svc_link.split('/')
 
     if link_parts[-2] != 'services':
-        raise exceptions.IntegrityError(_(
-            "Unsupported service link: %(link)s") % {
-            'link': svc_link})
+        raise exceptions.IntegrityError(
+            f"Unsupported service link: {svc_link}")
     link_parts[-2] = 'endpoints'
 
     return "/".join(link_parts)

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
+hacking>=2.0.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT