feat: Allow superadmins to list vfolders as specific user

[SonMinWoo]

resolve: lablup/backend.ai#321
related: lablup/backend.ai-webui#1237

To solve the problem of webui, this is implemented in list_folders api. This feature uses only the user's email to search the folder of the user. Now only superadmin can use this feature, but it will be expandable like public/private folder option.

It request to DB about vfolder informations belong to carried user email. The other process is same to existing folder listing feature.

When superadmin click checkbox and it is checked, webui request to manager this feature. Parameter is added 'user email'.

[codecov]

Codecov Report

Merging #544 (1c65e95) into main (268110c) will increase coverage by 0.14%.
The diff coverage is 9.37%.

@@            Coverage Diff             @@
##             main     #544      +/-   ##
==========================================
+ Coverage   49.13%   49.27%   +0.14%     
==========================================
  Files          54       54              
  Lines        9031     9207     +176     
==========================================
+ Hits         4437     4537     +100     
- Misses       4594     4670      +76     

Impacted Files	Coverage Δ
src/ai/backend/manager/api/utils.py	52.23% <9.37%> (-5.85%)	⬇️
src/ai/backend/manager/registry.py	17.24% <0.00%> (+0.24%)	⬆️
src/ai/backend/manager/models/base.py	53.28% <0.00%> (+0.26%)	⬆️
src/ai/backend/manager/server.py	61.84% <0.00%> (+0.26%)	⬆️
src/ai/backend/manager/config.py	44.44% <0.00%> (+0.40%)	⬆️
src/ai/backend/manager/cli/etcd.py	53.17% <0.00%> (+3.60%)	⬆️
src/ai/backend/manager/models/utils.py	83.64% <0.00%> (+5.31%)	⬆️
src/ai/backend/manager/plugin/error_monitor.py	62.71% <0.00%> (+16.94%)	⬆️

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[achimnol]

To keep consistency with owner_access_key used in session APIs to delegate the identity, let's rename the new user argument as owner_user_email.

[achimnol]

Q: Why not used query_accessible_vfolders() with the target user UUID and role?

[SonMinWoo]

Q: Why not used query_accessible_vfolders() with the target user UUID and role?

A: It is because double query is needed to know the target user UUID and role by only email. I thought this process cause performance degradation.

[achimnol]

Q: Why not used query_accessible_vfolders() with the target user UUID and role?

A: It is because double query is needed to know the target user UUID and role by only email. I thought this process cause performance degradation.

That overhead is okay because it only fetches one row from a unique key. The owner_access_key (get_access_key_scopes()) already doing the same. I've rewritten so by myself.

[lizable]

I fixed minor things to make list_folders() function works fine.

[lizable]

I fixed this part since there's no user_uuid or user_role field in the request parameter.
Instead, we can use uuid and role field from user field in request.

[achimnol]

Thanks! 👍🏼

[achimnol]

Let's deprecate the "all" option as it would incur severe performance overheads when used on the cloud. I will update the code.