fix: Bad configuration item: apisix-admin-api-version

[AlinsRan]

Type of change:

• Bugfix
• New feature provided
• Improve performance
• Backport patches

What this PR does / why we need it:

Ref:

• bug: Bad configuration results in incompatibility between APISIX and Ingress Controller. apisix-helm-chart#423

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

[codecov-commenter]

Codecov Report

Merging #1551 (bfc5705) into master (4208ca7) will increase coverage by 0.11%.
The diff coverage is 82.60%.

@@            Coverage Diff             @@
##           master    #1551      +/-   ##
==========================================
+ Coverage   41.41%   41.53%   +0.11%     
==========================================
  Files          85       87       +2     
  Lines        7406     7416      +10     
==========================================
+ Hits         3067     3080      +13     
+ Misses       3986     3984       -2     
+ Partials      353      352       -1     

Impacted Files	Coverage Δ
...kg/providers/apisix/translation/apisix_upstream.go	62.33% <69.23%> (+6.49%)	⬆️
pkg/config/config.go	63.54% <100.00%> (-0.59%)	⬇️
pkg/providers/utils/schema.go	100.00% <100.00%> (ø)
pkg/providers/utils/scheme.go	100.00% <100.00%> (ø)

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