Add connect event reporting

Adds reporting of connect events including netId, destination IP address,
destination port, uid and connect latency.

Also enables the relevant tests in the connect_benchmark.

Currently ignores the new data it receives, further work will be
done in the subsequent CLs.

Test: for now just the benchmarking, in the future CTS

Bug: 29748723

(cherry picked from commit 4b9b78aa02336de9291e5085401cef44c03c3bba)

Change-Id: If8e5ddcd2d29271e2f63a3338a3daf83e7afccdc
diff --git a/server/EventReporter.cpp b/server/EventReporter.cpp
index fd09b8a..c9238f4 100644
--- a/server/EventReporter.cpp
+++ b/server/EventReporter.cpp
@@ -37,6 +37,7 @@
 }
 
 android::sp<INetdEventListener> EventReporter::getNetdEventListener() {
+    std::lock_guard<std::mutex> lock(mutex);
     if (mNetdEventListener == nullptr) {
         // Use checkService instead of getService because getService waits for 5 seconds for the
         // service to become available. The DNS resolver inside netd is started much earlier in the