Update FormatterTest to track file size format change

The formatting of byte size values changed to include a space
between the number and the suffix, which is consistent with
CLDR (though the code in question does not use CLDR as the
source). This patch updates the expected strings to include
the space as well.

Bug: 21989073
Change-Id: I36ffd2b41139986717344c4969e5c108bdec9907
1 file changed