Add process tags to runtime metrics & dynamic instrumentation metrics probes

Author: vandonr

tracer/src/Datadog.Trace/Debugger/DebuggerFactory.cs

@@ -67,7 +67,8 @@ private static IDogStatsd GetDogStatsd(TracerSettings tracerSettings, string ser
         }
         else
         {
-            statsd = TracerManagerFactory.CreateDogStatsdClient(tracerSettings, serviceName, constantTags: null, prefix: DebuggerSettings.DebuggerMetricPrefix, telemtryFlushInterval: null);
+            var processTags = tracerSettings.PropagateProcessTags ? ProcessTags.TagsList : null;
+            statsd = TracerManagerFactory.CreateDogStatsdClient(tracerSettings, serviceName, processTags, DebuggerSettings.DebuggerMetricPrefix, telemtryFlushInterval: null);
         }
 
         return statsd;

tracer/src/Datadog.Trace/TracerManagerFactory.cs

@@ -513,8 +513,9 @@ internal virtual IDiscoveryService GetDiscoveryService(TracerSettings settings)
 
         private static IDogStatsd CreateDogStatsdClient(TracerSettings settings, string serviceName)
         {
+            var processTags = settings.PropagateProcessTags ? ProcessTags.TagsList : [];
             var customTagCount = settings.GlobalTags.Count;
-            var constantTags = new List<string>(5 + customTagCount)
+            var constantTags = new List<string>(5 + customTagCount + processTags.Count)
             {
                 "lang:.NET",
                 $"lang_interpreter:{FrameworkDescription.Instance.Name}",
@@ -523,6 +524,8 @@ private static IDogStatsd CreateDogStatsdClient(TracerSettings settings, string
                 $"{Tags.RuntimeId}:{Tracer.RuntimeId}"
             };
 
+            constantTags.AddRange(processTags);
+
             if (customTagCount > 0)
             {
                 var tagProcessor = new TruncatorTagsProcessor();