Merge branch 'gree-gorey-master'

pykube/objects.py

@@ -142,8 +142,18 @@ def update(self):
         self.api.raise_for_status(r)
         self.set_obj(r.json())
 
-    def delete(self):
-        r = self.api.delete(**self.api_kwargs())
+    def delete(self, propagation_policy: str = None):
+        '''
+        Delete the Kubernetes resource by calling the API.
+
+        The parameter propagation_policy defines whether to cascade the delete. It can be "Foreground", "Background" or "Orphan".
+        See https://kubernetes.io/docs/concepts/workloads/controllers/garbage-collection/#setting-the-cascading-deletion-policy
+        '''
+        if propagation_policy:
+            options = {"propagationPolicy": propagation_policy}
+        else:
+            options = {}
+        r = self.api.delete(**self.api_kwargs(data=json.dumps(options)))
         if r.status_code != 404:
             self.api.raise_for_status(r)