Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Update all script shebangs to use /usr/bin/env interpreter instead of /bin/interpreter
This is required to support systems where bash doesn't reside in /bin (such as NixOS, or the *BSD family) and allow users to specify a different interpreter version through $PATH manipulation.
https://www.cyberciti.biz/tips/finding-bash-perl-python-portably-using-env.html
```release-note
Use /usr/bin/env in all script shebangs to increase portability.
```
Kubernetes-commit: b5f61ac129019d314e473584c1491b7ca62144c7
Automatic merge from submit-queue (batch tested with PRs 59965, 59115, 63076, 63059). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Upgrade dep json-iterator/go to fix base64 decode bug
**What this PR does / why we need it**:
upgrade dep `json-iterator/go` to fix base64 decode bug #62742
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#62742
**Special notes for your reviewer**:
Just upgrade `json-iterator/go` to latest which includes base64 decode fix https://github.com/json-iterator/go/pull/266
No other code changes
**Release note**:
```release-note
None
```
Kubernetes-commit: 3dbcd1ddcee786f443f89a82514bbd9c6ad06c99
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
generated code should pass go vet for go1.10
**What this PR does / why we need it**:
Update code generator and the code it generates to pass `go vet`.
go1.10 runs `go vet` whenever `go test` is run. Because of this, generated code for CRDs needs to pass `go vet`.
**Release note**:
```release-note
Code generated for CRDs now passes `go vet`.
```
Kubernetes-commit: 5dde701b876d1d0915314c3ed146e986c4327f7e
Automatic merge from submit-queue (batch tested with PRs 62273, 62461). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Don't log when error returned
**What this PR does / why we need it**:
Both logging and returning an error is an antipattern. If the caller wants it logged they will log it. And in this case it will be logged twice which is very confusing for debugging.
**Release note**:
```release-note
NONE
```
/kind cleanup
/sig api-machinery
Kubernetes-commit: 0b5fa0b94a2e147ddae2278623c89648c211d229
Automatic merge from submit-queue (batch tested with PRs 61400, 61048). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
code-gen: allow specifying custom resync periods for certain informer types
**What this PR does / why we need it**:
This PR extends the informer code-generator to allow the consumer to specify a custom resync period for certain informer types and uses the default resync period if none is defined.
**Special notes for your reviewer**:
Example:
```go
cs := clientset.NewForConfigOrDie(config)
resyncConfig := externalversions.ResyncConfiguration{
&samplev1alpha1.Sample{}: 30 * time.Second,
}
informer := externalversions.NewSharedInformerFactory(cs, 2*time.Minute, externalversions.WithCustomResyncConfig(resyncConfig))
```
**Release note**:
```release-note
NONE
```
Kubernetes-commit: 7daaa826d291c1501a52177c3e14b00c503c8527
