test: flaky box/hash_gh-1467.test.lua test

[avtikhon]

Tarantool version:
Tarantool 2.7.0-10-g7b3acc3d4
Target: Darwin-x86_64-RelWithDebInfo
Build options: cmake . -DCMAKE_INSTALL_PREFIX=/usr/local -DENABLE_BACKTRACE=ON
Compiler: /Library/Developer/CommandLineTools/usr/bin/cc /Library/Developer/CommandLineTools/usr/bin/c++
C_FLAGS: -Wno-unknown-pragmas -fexceptions -funwind-tables -fno-omit-frame-pointer -fno-stack-protector -fno-common -msse2 -std=c11 -Wall -Wextra -Wno-strict-aliasing -Wno-char-subscripts -Wno-gnu-alignof-expression -Werror
CXX_FLAGS: -Wno-unknown-pragmas -fexceptions -funwind-tables -fno-omit-frame-pointer -fno-stack-protector -fno-common -msse2 -std=c++11 -Wall -Wextra -Wno-strict-aliasing -Wno-char-subscripts -Wno-invalid-offsetof -Wno-gnu-alignof-expression -Werror

OS version:
OSX 13

Bug description:
https://gitlab.com/tarantool/tarantool/-/jobs/822838595#L4244

artifacts.zip

results file checksum: 47fb00af79ba20d33b6e9b8fc1a7320e

[004] --- box/hash_gh-1467.result	Wed Sep 30 17:19:31 2020
[004] +++ /tmp/tnt/rejects/box/hash_gh-1467.reject	Sat Oct 31 17:18:57 2020
[004] @@ -14,4 +14,5 @@
[004]   | ...
[004]  space:drop()
[004]   | ---
[004] + | - error: 'Supplied key type of part 0 does not match index part type: expected string'
[004]   | ...
[004] 

Steps to reproduce:

Optional (but very desirable):

• coredump
• backtrace
• netstat