fix split call to handle apis of the format a/b/c (#440)

Co-authored-by: dbasunag <[email protected]>

Author: openshift-cherrypick-robot

openshift/dynamic/discovery.py

@@ -130,7 +130,7 @@ def get_resources_for_api_version(self, prefix, group, version, preferred):
         resources_raw = list(filter(lambda resource: '/' not in resource['name'], resources_response))
         subresources_raw = list(filter(lambda resource: '/' in resource['name'], resources_response))
         for subresource in subresources_raw:
-            resource, name = subresource['name'].split('/')
+            resource, name = subresource['name'].split('/', 1)
             if not subresources.get(resource):
                 subresources[resource] = {}
             subresources[resource][name] = subresource