Move test looping all locales into a separate package

- Also, convert them into @Parameterized test to show the locale name
  when the test fails.

Bug: 178351808
Test: atest CtsLibcoreTestCases:libcore.highmemorytest
Change-Id: I4b01de12983a3df2e3c4da624ee9b612c0f7b026
14 files changed