fix: translate error of old ApisixRoute

[AlinsRan]

Type of change:

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

why we need it:

ref:

• bug: when service port change,the ingress can't handle correctly #1165
• proposal: need an interface or function to translate old resource objects #1186

When translating old objects, translateupstream needs to parse the latest services, which will lead to data inconsistency. Thus, retry and data inconsistency are caused.

What this PR does

Implements an function responsible for converting old objects

1. Get route object from cache.
2. Using route to construct Upstream and PluginConfig.
3. Compare and write APISIX.

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 #1191 (1cd6439) into master (a0bc739) will decrease coverage by 0.12%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1191      +/-   ##
==========================================
- Coverage   29.98%   29.85%   -0.13%     
==========================================
  Files          81       81              
  Lines        9979    10021      +42     
==========================================
  Hits         2992     2992              
- Misses       6663     6705      +42     
  Partials      324      324              

Impacted Files	Coverage Δ
pkg/ingress/apisix_route.go	0.00% <0.00%> (ø)
pkg/ingress/utils/manifest.go	45.62% <0.00%> (ø)

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[tao12345666333]

LGTM