Automated cherry pick of #2872: gittar add tree search depth config

[erda-bot]

Cherry pick of #2872 on release/1.4.

Squashed commit message:

commit 9243aabd2101f3fcccc850cf0d91f662a5591a68
Author: kakj <18579115540@163.com>
Date:   Thu Nov 4 19:49:04 2021 +0800

    gittar tree search add depth config (#2872)

---

What type of this PR

/kind feature

What this PR does / why we need it:

The git search interface adds dynamic configuration search depth

Which issue(s) this PR fixes:

• Erda Cloud Issue Link

ChangeLog

Language	Changelog
🇺🇸 English	The git search interface adds dynamic configuration search depth
🇨🇳 中文	git search 接口增加动态配置搜索深度

Need cherry-pick to release versions?

/cherry-pick release/1.4

/cherry-pick release/1.3

[erda-bot]

Automated cherry pick can ONLY be triggered when this PR is MERGED!

[codecov]

Codecov Report

Merging #2880 (9243aab) into release/1.4 (2769b0a) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           release/1.4    #2880   +/-   ##
============================================
  Coverage        17.14%   17.14%           
============================================
  Files             1284     1284           
  Lines           130197   130197           
============================================
  Hits             22316    22316           
  Misses          105624   105624           
  Partials          2257     2257           

[sfwn]

/approve