Support customizing “Accept” header and added a testcase to test the header

Author: Yashks1994

Diff for: dynamic/client.py

@@ -219,11 +219,16 @@ def request(self, method, path, body=None, **params):
         header_params = params.get('header_params', {})
         form_params = []
         local_var_files = {}
+
         # HTTP header `Accept`
-        header_params['Accept'] = self.client.select_header_accept([
-            'application/json',
-            'application/yaml',
-        ])
+        if params.get('header_params') is not None:
+            partial_object = params.get('header_params')
+            if 'PartialObjectMetadata' in partial_object.get('Accept'):
+                header_params['Accept'] = 'application/json;as=PartialObjectMetadata;v=v1;g=meta.k8s.io'
+        else:
+            #default
+            header_params['Accept'] = self.client.select_header_accept([
+            'application/json', 'application/yaml'])
 
         # HTTP header `Content-Type`
         if params.get('content_type'):

Diff for: dynamic/test_client.py

@@ -77,6 +77,17 @@ def test_cluster_custom_resources(self):
         self.assertEqual(name, resp.metadata.name)
         self.assertTrue(resp.status)
 
+        #Checking header_params `PartialObjectMetadata`
+        header_params = 'PartialObjectMetadata'
+        params = {'header_params': {'Accept': 'application/json;as=PartialObjectMetadata;v=v1;g=meta.k8s.io'}}
+        api_version = 'meta.k8s.io/v1'
+        resp = crd_api.get(
+            name=name,
+            **params
+        )
+        self.assertEqual(header_params, resp.kind)
+        self.assertEqual(api_version, resp.apiVersion)
+
         try:
             changeme_api = client.resources.get(
                 api_version='apps.example.com/v1', kind='ClusterChangeMe')