Track move of distro installer code

Track move of distro installer code; reflect the new
build target.

Tested with:
make -j30 FrameworksServicesTests
adb install -r -g \
  "out/target/product/angler/data/app/FrameworksServicesTests/FrameworksServicesTests.apk"
adb shell am instrument -e package com.android.server.timezone -w \
  com.android.frameworks.servicestests \
  "com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner"

Bug: 31008728
Test: See above
Change-Id: Iad987d404af75af3694d50e25ed419889a9557f2
diff --git a/services/core/java/com/android/server/timezone/RulesManagerService.java b/services/core/java/com/android/server/timezone/RulesManagerService.java
index 804a8b7..5724398 100644
--- a/services/core/java/com/android/server/timezone/RulesManagerService.java
+++ b/services/core/java/com/android/server/timezone/RulesManagerService.java
@@ -22,6 +22,7 @@
 import com.android.timezone.distro.DistroVersion;
 import com.android.timezone.distro.StagedDistroOperation;
 import com.android.timezone.distro.TimeZoneDistro;
+import com.android.timezone.distro.installer.TimeZoneDistroInstaller;
 
 import android.app.timezone.Callback;
 import android.app.timezone.DistroFormatVersion;
@@ -42,7 +43,6 @@
 import java.util.Arrays;
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicBoolean;
-import libcore.tzdata.update2.TimeZoneDistroInstaller;
 
 // TODO(nfuller) Add EventLog calls where useful in the system server.
 // TODO(nfuller) Check logging best practices in the system server.