New: Instance Name used for Syslog

src/NzbDrone.Core/Configuration/ConfigFileProvider.cs

@@ -237,7 +237,7 @@ namespace NzbDrone.Core.Configuration
 
         public int SyslogPort => GetValueInt("SyslogPort", 514, persist: false);
 
-        public string SyslogLevel => GetValue("SyslogLevel", LogLevel).ToLowerInvariant();
+        public string SyslogLevel => GetValue("SyslogLevel", LogLevel, false).ToLowerInvariant();
 
         public int GetValueInt(string key, int defaultValue, bool persist = true)
         {

src/NzbDrone.Core/Instrumentation/ReconfigureLogging.cs

@@ -44,7 +44,8 @@ namespace NzbDrone.Core.Instrumentation
 
             if (_configFileProvider.SyslogServer.IsNotNullOrWhiteSpace())
             {
-                SetSyslogParameters(_configFileProvider.SyslogServer, _configFileProvider.SyslogPort, minimumLogLevel);
+                var syslogLevel = LogLevel.FromString(_configFileProvider.SyslogLevel);
+                SetSyslogParameters(_configFileProvider.SyslogServer, _configFileProvider.SyslogPort, syslogLevel);
             }
 
             var rules = LogManager.Configuration.LoggingRules;
@@ -118,7 +119,7 @@ namespace NzbDrone.Core.Instrumentation
             syslogTarget.MessageSend.Udp.Server = syslogServer;
             syslogTarget.MessageSend.Udp.ReconnectInterval = 500;
             syslogTarget.MessageCreation.Rfc = RfcNumber.Rfc5424;
-            syslogTarget.MessageCreation.Rfc5424.AppName = BuildInfo.AppName;
+            syslogTarget.MessageCreation.Rfc5424.AppName = _configFileProvider.InstanceName;
 
             var loggingRule = new LoggingRule("*", minimumLogLevel, syslogTarget);