Created tests for the OTA Update library

Tests mirror the structure of the code:
acts/framework/tests/(.*)_test.py -> acts/framework/acts/$1.py

Bug: 63705128
Test: This commit
Change-Id: I73e72998f28d9442a2190767a333127478eb31ac
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 8c9f7ea..b142a6d 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,5 +1,6 @@
 [Hook Scripts]
 acts_base_class_test = ./acts/framework/tests/acts_base_class_test.py
+acts_libs_ota_tests = ./acts/framework/tests/libs/ota/unittest_bundle.py
 acts_adb_test = ./acts/framework/tests/acts_adb_test.py
 acts_android_device_test = ./acts/framework/tests/acts_android_device_test.py
 acts_asserts_test = ./acts/framework/tests/acts_asserts_test.py