Add the conversion function for v1alpha1 and v1beta1

[houshengbo]

This PR has done the following updates:

• Added the conversion function between v1alpha1 and v1beta1 APIs.
• Gateways information can be passed to v1beta1 API during the v1alpha1 to v1beta1 conversion.
• System resources configuration can be passed to v1beta1 API during the v1alpha1 to v1beta1 conversion.
• The v1beta1 API removed all the deprecated fields in v1alpha1, including ResourceRequirementsOverride, DeprecatedKnativeIngressGateway and DeprecatedClusterLocalGateway.

[codecov]

Codecov Report

Merging #948 (598b732) into main (ff6232d) will increase coverage by 2.42%.
The diff coverage is 95.69%.

@@            Coverage Diff             @@
##             main     #948      +/-   ##
==========================================
+ Coverage   81.21%   83.64%   +2.42%     
==========================================
  Files          35       41       +6     
  Lines        1006     1192     +186     
==========================================
+ Hits          817      997     +180     
- Misses        119      125       +6     
  Partials       70       70              

Impacted Files	Coverage Δ
...pis/operator/v1alpha1/knativeserving_conversion.go	92.59% <92.59%> (ø)
...is/operator/v1alpha1/knativeeventing_conversion.go	95.78% <95.78%> (ø)
pkg/apis/operator/v1alpha1/deploymentoverride.go	100.00% <100.00%> (ø)
pkg/apis/operator/v1alpha1/istioconfig.go	100.00% <100.00%> (ø)
...pis/operator/v1beta1/knativeeventing_conversion.go	100.00% <100.00%> (ø)
...apis/operator/v1beta1/knativeserving_conversion.go	100.00% <100.00%> (ø)
pkg/apis/operator/v1alpha1/knativeserving_types.go	50.00% <0.00%> (+50.00%)	⬆️
...kg/apis/operator/v1alpha1/knativeeventing_types.go	50.00% <0.00%> (+50.00%)	⬆️

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[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[maximilien]

/approve
/lgtm

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: houshengbo, maximilien

The full list of commands accepted by this bot can be found here.

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• OWNERS [houshengbo]

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[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[houshengbo]

/test pull-knative-operator-serving-upgrade-tests

[knative-prow-robot]

New changes are detected. LGTM label has been removed.

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-operator-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/apis/operator/v1alpha1/deploymentoverride.go	Do not exist	100.0%
pkg/apis/operator/v1alpha1/istioconfig.go	Do not exist	100.0%
pkg/apis/operator/v1alpha1/knativeeventing_conversion.go	Do not exist	95.7%
pkg/apis/operator/v1alpha1/knativeserving_conversion.go	Do not exist	85.7%
pkg/apis/operator/v1beta1/knativeeventing_conversion.go	Do not exist	100.0%
pkg/apis/operator/v1beta1/knativeserving_conversion.go	Do not exist	100.0%