feat: searching upstream by users input while creating new routes

[bisakhmondal]

Please answer these questions before submitting a pull request

• Why submit this pull request?

• Bugfix

• New feature provided

• Improve performance

• Backport patches

• Related issues
  resolves discuss: select upstream in the "Define API Backend Server" should provide a search function #1555

New feature or improvement

apisix.mp4

Thank You.

[codecov-io]

Codecov Report

Merging #1589 (eaab683) into master (2d6339e) will decrease coverage by 1.38%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1589      +/-   ##
==========================================
- Coverage   71.57%   70.18%   -1.39%     
==========================================
  Files         132       46      -86     
  Lines        5341     3019    -2322     
  Branches      584        0     -584     
==========================================
- Hits         3823     2119    -1704     
+ Misses       1273      655     -618     
  Partials      245      245              

Flag	Coverage Δ
backend-e2e-test	60.74% <ø> (-0.14%)	⬇️
backend-e2e-test-ginkgo	46.27% <ø> (ø)
backend-unit-test	51.54% <ø> (ø)
frontend-e2e-test	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
api/internal/core/storage/etcd.go	43.63% <0.00%> (-3.64%)	⬇️
web/src/pages/SSL/service.ts
.../src/pages/User/components/LoginMethodPassword.tsx
...b/src/pages/User/components/LoginMethodExample.tsx
...eb/src/components/PluginOrchestration/constants.ts
...ages/Route/components/Step2/RequestRewriteView.tsx
web/src/pages/Consumer/components/Preview.tsx
web/src/components/Plugin/PluginPage.tsx
web/src/pages/Route/components/Step1/index.tsx
.../components/PluginOrchestration/DrawPluginStyle.ts
... and 76 more

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[juzhiyuan]

LGTM

[liuxiran]

LGTM for the code , it would be better to add test case for this nice new feature

[bisakhmondal]

LGTM for the code , it would be better to add test case for this nice new feature

Thanks. Yeah, it's a nice but really minor addition to the codebase. Hey guys what do you think?

[juzhiyuan]

LGTM for the code , it would be better to add test case for this nice new feature

Thanks. Yeah, it's a nice but really minor addition to the codebase. Hey guys what do you think?

Agree :) Not urgent IMO.

[liuxiran]

Thanks. Yeah, it's a nice but really minor addition to the codebase. Hey guys what do you think?

A single step makes a thousand miles ^_^
Adding test cases later is also a good option