Statsd dumpsys handles multiple and saved configs

Statsd dumpsys wasn't handling multiple configs properly. Also, doing a
dump would delete the data that had been saved to disk. This cl fixes
both those issues.

Test: run cts-dev -m CtsStatsdHostTestCases -t android.cts.statsd.atom.HostAtomTests#testDumpsysStats
Change-Id: I5f2f86c70fbcbc1407aae1b1ffeb7fbdb9f67d0e
diff --git a/cmds/statsd/src/StatsLogProcessor.cpp b/cmds/statsd/src/StatsLogProcessor.cpp
index a981997..69cb264 100644
--- a/cmds/statsd/src/StatsLogProcessor.cpp
+++ b/cmds/statsd/src/StatsLogProcessor.cpp
@@ -293,7 +293,7 @@
 
     // Then, check stats-data directory to see there's any file containing
     // ConfigMetricsReport from previous shutdowns to concatenate to reports.
-    StorageManager::appendConfigMetricsReport(key, proto);
+    StorageManager::appendConfigMetricsReport(key, proto, erase_data);
 
     auto it = mMetricsManagers.find(key);
     if (it != mMetricsManagers.end()) {