Merge branch 'host-metrics-reporting-period' into 'master'

Set HostMetricsReportingPeriod = 10 sec as default to satisfy default dashboard retentions.

See merge request vostok-libraries/hosting!1

Vostok.Hosting/Components/SystemMetrics/SystemMetricsSettings.cs

@@ -32,6 +32,6 @@ public class SystemMetricsSettings
 
         public TimeSpan HostMetricsLoggingPeriod { get; set; } = 10.Seconds();
 
-        public TimeSpan? HostMetricsReportingPeriod { get; set; }
+        public TimeSpan? HostMetricsReportingPeriod { get; set; } = 10.Seconds();
     }
 }