Add support for HealthReportEmailAddress configuration option

Relates to #20

ATxCommon/Serializables/ServiceConfig.cs

@@ -17,6 +17,8 @@ namespace ATxCommon.Serializables
     {
         private static readonly Logger Log = LogManager.GetCurrentClassLogger();
 
+        private string _healthReportEmailAddress;
+
 
         #region required configuration parameters
 
@@ -200,6 +202,20 @@ namespace ATxCommon.Serializables
         /// </summary>
         public string AdminDebugEmailAddress { get; set; }
 
+        /// <summary>
+        /// The mail recipient address for system health reports, falling back to AdminEmailAddress
+        /// in case it is not set explicitly.
+        /// </summary>
+        public string HealthReportEmailAddress {
+            get {
+                if (string.IsNullOrEmpty(_healthReportEmailAddress))
+                    return AdminEmailAddress;
+
+                return _healthReportEmailAddress;
+            }
+            set => _healthReportEmailAddress = value;
+        }
+
         /// <summary>
         /// Send an email to the user upon completed transfers. Default: true.
         /// </summary>

Resources/conf/config.common.xml

@@ -100,6 +100,10 @@
          messages to, e.g. on completed transfers -->
     <AdminDebugEmailAddress>admin@mydomain.xy</AdminDebugEmailAddress>
 
+    <!-- HealthReportEmailAddress: an email address where to send system health
+         reports to, falling back to AdminEmailAddress if empty -->
+    <HealthReportEmailAddress>admin@mydomain.xy</HealthReportEmailAddress>
+
     <!-- SendTransferNotification: send email to user on finished transfers -->
     <SendTransferNotification>true</SendTransferNotification>