idle deprovision in hub (#895)

- Feature: Hub watchdog automatically deprovisions inactive provisioned and hibernated instances
- Feature: Added `stats/activity_counters` endpoint to measure server activity
- Feature: Added configuration options for hub watchdog
  - `--hub-watchdog-provisioned-inactivity-timeout-seconds` Inactivity timeout before a provisioned instance is deprovisioned
  - `--hub-watchdog-hibernated-inactivity-timeout-seconds` Inactivity timeout before a hibernated instance is deprovisioned
  - `--hub-watchdog-inactivity-check-margin-seconds` Margin before timeout at which an activity check is issued
  - `--hub-watchdog-cycle-interval-ms` Watchdog poll interval in milliseconds
  - `--hub-watchdog-cycle-processing-budget-ms` Maximum time budget per watchdog cycle in milliseconds
  - `--hub-watchdog-instance-check-throttle-ms` Minimum delay between checks on a single instance
  - `--hub-watchdog-activity-check-connect-timeout-ms` Connect timeout for activity check requests
  - `--hub-watchdog-activity-check-request-timeout-ms` Request timeout for activity check requests

1 files changed, 2 insertions, 2 deletions

diff --git a/src/zenserver/storage/admin/admin.h b/src/zenserver/storage/admin/admin.h
index ee3da4579..361153e42 100644
--- a/src/zenserver/storage/admin/admin.h
+++ b/src/zenserver/storage/admin/admin.h
@@ -13,7 +13,7 @@ class JobQueue;
 class ZenCacheStore;
 struct ZenServerConfig;
 
-class HttpAdminService : public zen::HttpService
+class HttpAdminService : public HttpService
 {
 public:
 	struct LogPaths
@@ -31,7 +31,7 @@ public:
 	~HttpAdminService();
 
 	virtual const char* BaseUri() const override;
-	virtual void		HandleRequest(zen::HttpServerRequest& Request) override;
+	virtual void		HandleRequest(HttpServerRequest& Request) override;
 
 private:
 	HttpRequestRouter	   m_Router;