Reimplement Machine Provider integration

appengine/swarming/cron.yaml

Index: appengine/swarming/cron.yaml
diff --git a/appengine/swarming/cron.yaml b/appengine/swarming/cron.yaml
index 36673e09773e294592ecafe311ca2fb1b17baa7a..83458c2ff7f9eb5590cec847f894c2ac0d1c83b9 100644
--- a/appengine/swarming/cron.yaml
+++ b/appengine/swarming/cron.yaml
@@ -18,13 +18,13 @@ cron:
   url: /internal/cron/abort_expired_task_to_run
   schedule: every 1 minutes
 
-- description: Manage bots leased from Machine Provider.
-  url: /internal/cron/machine_provider
-  schedule: every 1 minutes synchronized
+- description: Configure Machine Provider leases.
+  url: /internal/cron/machine_provider_config
+  schedule: every 1 minutes
 
-- description: Clean up bots leased from Machine Provider.
-  url: /internal/cron/machine_provider_cleanup
-  schedule: every 5 minutes
+- description: Manage Machine Provider leases.
+  url: /internal/cron/machine_provider_manage
+  schedule: every 1 minutes synchronized
 
 - description: Aggregate all bots dimensions for easier sorting.
   url: /internal/cron/aggregate_bots_dimensions
@@ -34,10 +34,6 @@ cron:
   url: /internal/cron/aggregate_tasks_tags
   schedule: every 1 hours
 
-- description: Enqueue task to handle Pub/Sub messages from Machine Provider.
-  url: /internal/cron/machine_provider_pubsub
-  schedule: every 1 minutes
-
 ### ereporter2
 
 - description: ereporter2 cleanup