Get tags from appSettings

Author: nmdias

samples/Exceptionless.SampleMvc/Web.config

@@ -3,6 +3,7 @@
   <appSettings>
     <add key="Exceptionless:ApiKey" value="LhhP1C9gijpSKCslHHCvwdSIz298twx271nTest" />
     <add key="Exceptionless:ServerUrl" value="http://localhost:5200" />
+    <add key="Exceptionless:Tags" value="Tag1, Tag2" />
     <add key="webpages:Version" value="3.0.0.0" />
     <add key="webpages:Enabled" value="false" />
     <add key="ClientValidationEnabled" value="true" />

src/Exceptionless/Extensions/ExceptionlessConfigurationExtensions.cs

@@ -390,6 +390,11 @@ public static void ReadFromAppSettings(this ExceptionlessConfiguration config) {
             string serverUrl = ConfigurationManager.AppSettings["Exceptionless:ServerUrl"];
             if (!String.IsNullOrEmpty(serverUrl))
                 config.ServerUrl = serverUrl;
+
+            string tags = ConfigurationManager.AppSettings["Exceptionless:Tags"];
+            if (!String.IsNullOrEmpty(tags))
+                foreach (var tag in tags.SplitAndTrim(',').Where(tag => !String.IsNullOrEmpty(tag)))
+                    config.DefaultTags.Add(tag);
         }
 #endif