tests/int/checkpoint.bats: ignore SC2206
tests/int/checkpoint.bats: ignore SC2206

Ignore warnings like this:

> In checkpoint.bats line 169:
>   PIDS_TO_KILL=($cpt_pid)
>                 ^------^ SC2206: Quote to prevent word splitting/globbing, or split robustly with mapfile or read -a.

Since in all the cases we deal with either pids or fds, and they don't
have spaces.

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

estesp/runc,kolyshkin/runc,opencontainers/runc,rhatdan/runc,kolyshkin/runc,rhatdan/runc,dqminh/runc,opencontainers/runc,kolyshkin/runc,kolyshkin/runc,rhatdan/runc,xiaochenshen/runc,opencontainers/runc,mikebrow/runc,estesp/runc,dqminh/runc,xiaochenshen/runc,dqminh/runc,estesp/runc,dqminh/runc,rhatdan/runc,xiaochenshen/runc,mikebrow/runc,mikebrow/runc,opencontainers/runc