The `snap refresh` command doesn't honor my locale settings

[林博仁(Buo-ren, Lin)]

Refer to the following output for the problem:

```
root@brlin-mz-530:~# locale
LANG=en_US.UTF-8
LANGUAGE=en
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
root@brlin-mz-530:~# snap refresh
下載 snap "vlc" (3794)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"） 下載 snap "git-filter-repo" (20)（從頻道 "latest/edge"）
```

My system is indeed configured with the zh_TW locale settings(as with the following output), however, when I choose to change the settings to another locale the `snap` command should honor it.

```
$ locale
LANG=zh_TW.UTF-8
LANGUAGE=zh_TW:zh
LC_CTYPE="zh_TW.UTF-8"
LC_NUMERIC="zh_TW.UTF-8"
LC_TIME="zh_TW.UTF-8"
LC_COLLATE="zh_TW.UTF-8"
LC_MONETARY="zh_TW.UTF-8"
LC_MESSAGES="zh_TW.UTF-8"
LC_PAPER="zh_TW.UTF-8"
LC_NAME="zh_TW.UTF-8"
LC_ADDRESS="zh_TW.UTF-8"
LC_TELEPHONE="zh_TW.UTF-8"
LC_MEASUREMENT="zh_TW.UTF-8"
LC_IDENTIFICATION="zh_TW.UTF-8"
LC_ALL=
```

[Sergio Cazzolato (sergio-j-cazzolato)]

Hi, thanks for raising this.

Could you please add the steps to reproduce the issue and tell in which OS version is being reproduced.