Revert "set deployment API to apps/v1 if k8s >= 1.9"

This reverts commit a226971.

rootfs/scheduler/resources/deployment.py

@@ -1,22 +1,13 @@
+from datetime import datetime, timedelta
 import json
 import time
-from datetime import datetime, timedelta
-
-from packaging.version import parse
-
 from scheduler.resources import Resource
 from scheduler.exceptions import KubeException, KubeHTTPException
 
 
 class Deployment(Resource):
     api_prefix = 'apis'
-
-    @property
-    def api_version(self):
-        if self.version() >= parse("1.9.0"):
-            return 'apps/v1'
-
-        return 'extensions/v1beta1'
+    api_version = 'extensions/v1beta1'
 
     def get(self, namespace, name=None, **kwargs):
         """
@@ -52,7 +43,7 @@ def manifest(self, namespace, name, image, entrypoint, command, spec_annotations
 
         manifest = {
             'kind': 'Deployment',
-            'apiVersion': self.api_version,
+            'apiVersion': 'extensions/v1beta1',
             'metadata': {
                 'name': name,
                 'labels': labels,