sr_RS and bs_BA locales: make collation rules the same as for hr_HR [BZ #22534]

sr_RS and bs_BA locales: make collation rules the same as for hr_HR [BZ #22534]

	According to CLDR, collation rules for Serbian and Bosnian
	should be the same as for Croatian.

	[BZ #22534]
	* localedata/Makefile: Add sr_RS.UTF-8 and bs_BA.UTF-8 to test-input
	and to the list of locales to be built for testing.
	* localedata/bs_BA.UTF-8.in: New file (same as hr_HR.UTF-8.in).
	* localedata/sr_RS.UTF-8.in: New file (same as hr_HR.UTF-8.in).
	* localedata/locales/bs_BA (LC_COLLATE): Use “copy "hr_HR"”.
	* localedata/locales/sr_RS (LC_COLLATE): Use “copy "hr_HR"”.