allow resource names >2 parts

Dynamic client discovery for resources with three part names, the
processing fails. Allow for processing names with >2 parts.

This was failing on an OpenShift environment with the resource
'virtualmachineinstances/sev/fetchcertchain'

Author: ejacques

kubernetes_asyncio/dynamic/discovery.py

@@ -189,7 +189,10 @@ async def get_resources_for_api_version(self, prefix, group, version, preferred)
         resources_raw = list(filter(lambda r: '/' not in r['name'], resources_response))
         subresources_raw = list(filter(lambda r: '/' in r['name'], resources_response))
         for subresource in subresources_raw:
-            resource, name = subresource['name'].split('/')
+            # Handle resources with >2 parts in their name
+            parts = subresource['name'].split('/')
+            resource = parts[0]
+            name = '/'.join(parts[1:])
             if not subresources.get(resource):
                 subresources[resource] = {}
             subresources[resource][name] = subresource