fix: verify generation in record status

[gxthrj]

Please answer these questions before submitting a pull request

• Why submit this pull request?

• Bugfix

• New feature provided

• Improve performance

• Backport patches

• Related issues
  bug: recordStatus status is overwritten  #671 bug: Informer recursively trigger update event #682

• How to fix?

Use the generation field under the resource and ObservedGeneration under the status to compare to prevent the status from being recorded repeatedly.

ref： https://github.com/kubernetes/community/blob/master/contributors/design-proposals/api-machinery/customresources-subresources.md#status-behavior

[codecov-commenter]

Codecov Report

Merging #706 (a02c42e) into master (a01888b) will increase coverage by 67.63%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           master      #706       +/-   ##
============================================
+ Coverage   32.36%   100.00%   +67.63%     
============================================
  Files          65         1       -64     
  Lines        6488         1     -6487     
============================================
- Hits         2100         1     -2099     
+ Misses       4137         0     -4137     
+ Partials      251         0      -251     

Impacted Files	Coverage Δ
pkg/ingress/apisix_tls.go
pkg/ingress/status.go
pkg/ingress/apisix_cluster_config.go
pkg/ingress/apisix_consumer.go
pkg/ingress/secret.go
pkg/ingress/apisix_upstream.go
pkg/ingress/apisix_route.go
pkg/apisix/cluster.go
pkg/apisix/cache/memdb.go
pkg/apisix/schema.go
... and 54 more

---

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[lingsamuel]

Can we add tests?

[tokers]

@gxthrj Could you add more descriptions on this PR so that we can know the context of it, frankly, I don't know the exact purpose of Generation.

[tao12345666333]

Can we add tests?

+1 @gxthrj PTAL

[tao12345666333]

@gxthrj please check the CI error

[gxthrj]

@gxthrj please check the CI error

The CI has passsed.

[tao12345666333]

CI passed

[tao12345666333]

Should we close #671 and #682?