Split box/hash.test.lua to a set of small independent tests

test/box/hash.result

test/box/hash.test.lua

test/box/hash_32bit_delete.result

test/box/hash_32bit_delete.test.lua

test/box/hash_32bit_insert.result

test/box/hash_32bit_insert.test.lua

test/box/hash_32bit_replace.result

test/box/hash_32bit_replace.test.lua

test/box/hash_32bit_select.result

test/box/hash_32bit_select.test.lua

test/box/hash_64bit_delete.result

test/box/hash_64bit_delete.test.lua

test/box/hash_64bit_insert.result

test/box/hash_64bit_insert.test.lua

test/box/hash_64bit_replace.result

test/box/hash_64bit_replace.test.lua

test/box/hash_64bit_select.result

test/box/hash_64bit_select.test.lua

test/box/hash_collation.result

test/box/hash_collation.test.lua