Move string resources for unit test to donottranslate.xml

Bug: 5904617
Change-Id: I2eb677a4dd9686f87fec9f11051775a5c9c670a1
diff --git a/tests/res/values/strings.xml b/tests/res/values/donottranslate.xml
similarity index 100%
rename from tests/res/values/strings.xml
rename to tests/res/values/donottranslate.xml