Add Github integration to subtasks

Change-Id: If382f2f5238e9d2323d6c2761d3d70a626ff9065
diff --git a/server/agent/manager.go b/server/agent/manager.go
index ab625bf..45b0965 100644
--- a/server/agent/manager.go
+++ b/server/agent/manager.go
@@ -107,6 +107,10 @@
 		firstAgent.Provider,
 		m.taskManager,
 		agentRoles,
+		m.prProvider,
+		m.config.GitHub.Owner,
+		m.config.GitHub.Repo,
+		m.cloneManager,
 	)
 
 	return nil