[fenix] For https://github.com/mozilla-mobile/fenix/issues/927 - Adds build type to glean to report the channel

app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt

@@ -23,6 +23,8 @@ import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runBlocking
+import mozilla.components.service.glean.BuildConfig
+import mozilla.components.service.glean.config.Configuration
 import org.mozilla.fenix.GleanMetrics.QrScanner
 import org.mozilla.fenix.GleanMetrics.Library
 import org.mozilla.fenix.GleanMetrics.ErrorPage
@@ -243,7 +245,7 @@ class GleanMetricsService(private val context: Context) : MetricsService {
 
         starter = CoroutineScope(Dispatchers.Default).launch {
             Glean.registerPings(Pings)
-            Glean.initialize(context)
+            Glean.initialize(context, Configuration(channel = BuildConfig.BUILD_TYPE))
 
             Metrics.apply {
                 defaultBrowser.set(Browsers.all(context).isDefaultBrowser)