Test coverage improvements: Patch upstream changes 38591/38593

Patches upstream changes for all the changes listed in the
following page:

http://bugs.icu-project.org/trac/log/icu4j/branches/fabalbon/56-1-test-coverage?action=stop_on_copy&mode=stop_on_copy&rev=38593&stop_rev=38591&limit=100

Bug: 27238545

(cherry picked from commit ae97726f86aa98a33c33ce09c583aeb3d2e253a6)

Change-Id: Ic9d2002dbe99c7332977004800d02fdc29df3363
1 file changed