Fix custom objects API to preserve backward compatibility

Reference:
- [kubernetes-client#866](kubernetes-client#866)
- [kubernetes-client#959](kubernetes-client#959)

Signed-off-by: Nabarun Pal <[email protected]>

kubernetes/client/api/custom_objects_api.py

@@ -2405,7 +2405,7 @@ def patch_cluster_custom_object_with_http_info(self, group, version, plural, nam
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501
@@ -2574,7 +2574,7 @@ def patch_cluster_custom_object_scale_with_http_info(self, group, version, plura
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501
@@ -2743,7 +2743,7 @@ def patch_cluster_custom_object_status_with_http_info(self, group, version, plur
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501
@@ -2921,7 +2921,7 @@ def patch_namespaced_custom_object_with_http_info(self, group, version, namespac
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501
@@ -3099,7 +3099,7 @@ def patch_namespaced_custom_object_scale_with_http_info(self, group, version, na
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json', 'application/apply-patch+yaml'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501
@@ -3277,7 +3277,7 @@ def patch_namespaced_custom_object_status_with_http_info(self, group, version, n
 
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json-patch+json', 'application/merge-patch+json', 'application/apply-patch+yaml'])  # noqa: E501
+            ['application/merge-patch+json'])  # noqa: E501
 
         # Authentication setting
         auth_settings = ['BearerToken']  # noqa: E501