Use `PushFilePreparer` to push files in PreloadCheck

This change modifies the test config file by switching to use `PushFilePreparer` instead of `FilePusher`, since the `FilePusher` class which is defined in `compatibility-tradefed` is designed for the tests that are part of compatibility suite, but PreloadCheck is not.

Bug: 220991354
Test: atest PreloadCheck
Change-Id: Id25a16d6339b0ec8b5b61f1799c842f5ebd143ba
diff --git a/tools/preload-check/AndroidTest.xml b/tools/preload-check/AndroidTest.xml
index a0645d5..d486f0f 100644
--- a/tools/preload-check/AndroidTest.xml
+++ b/tools/preload-check/AndroidTest.xml
@@ -14,7 +14,7 @@
      limitations under the License.
 -->
 <configuration description="Config for PreloadCheck">
-    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
         <option name="cleanup" value="true" />
         <option name="push" value="preload-check-device.jar->/data/local/tmp/preload-check-device.jar" />
     </target_preparer>
diff --git a/tools/preload-check/OWNERS b/tools/preload-check/OWNERS
new file mode 100644
index 0000000..e71c733
--- /dev/null
+++ b/tools/preload-check/OWNERS
@@ -0,0 +1 @@
+include /ZYGOTE_OWNERS