Add implementation of dependency metric collection for Livemetrics (#883)

* add implementation of dependency metric collection for QP

* Fix Dependency metrics in Livestream

Author: dhaval24

CHANGELOG.md

@@ -11,6 +11,8 @@
 - Deprecated `ApplicationInsightsHttpResponseWrapper`
 - Fixed [#826](https://github.com/Microsoft/ApplicationInsights-Java/issues/826) Remove duplicate provider.
 - Fix incorrect sdk version being sent in Quick Pulse payload.
+- Fix [#882](https://github.com/Microsoft/ApplicationInsights-Java/issues/882) Dependency metrics does not show up on 
+Livemetrics UX.
 
 # Version 2.3.1
 - Fixed [#799](https://github.com/Microsoft/ApplicationInsights-Java/issues/799) Removed dependency on Guava vulnerable to [CVE-2018-10237](https://nvd.nist.gov/vuln/detail/CVE-2018-10237).

core/src/main/java/com/microsoft/applicationinsights/internal/quickpulse/QuickPulseDataCollector.java

@@ -177,6 +177,15 @@ public void add(Telemetry telemetry) {
     }
 
     private void addDependency(RemoteDependencyTelemetry telemetry) {
+        Counters counters = this.counters.get();
+        if (counters == null) {
+            return;
+        }
+        counters.rddsAndDuations.addAndGet(
+                Counters.encodeCountAndDuration(1, telemetry.getDuration().getMilliseconds()));
+        if (!telemetry.getSuccess()) {
+            counters.unsuccessfulRdds.incrementAndGet();
+        }
     }
 
     private void addException() {