Update openshift dependency

This updates the openshift client library dependency which also updates
the kubernetes client library. Do this to ensure we keep the delta with
upstream client library updates small.

Change-Id: I43e7e615f5a42b9d11114ea44949d711eec54504

requirements.txt

@@ -16,7 +16,7 @@ voluptuous
 kazoo>=2.8.0
 Paste
 WebOb>=1.8.1
-openshift>=0.11.2,<0.12.0
+openshift>=0.13.1,<0.14.0
 boto3>=1.20.0
 google-api-python-client
 azure-mgmt-compute<17.0.0