Enable verify-import-boss check for e2e framework

[oomichi]

What happened:

There is test/e2e/framework/.import-restrictions to manage import ways under test/e2e/framework/ but that doesn't work at our upstream CI.
We can enable it by #81246 (comment)
But if doing that, we will face the following error with ./hack/verify-import-boss.sh

E0115 22:24:36.649546    8112 main.go:93] Error: Failed executing generator: some packages had errors:
errors in package "k8s.io/kubernetes/test/e2e/framework/security":
the following imports did not match any allowed prefix:
  k8s.io/kubernetes/pkg/scheduler/algorithm/predicates
  k8s.io/kubernetes/pkg/scheduler/framework/plugins/helper
  k8s.io/kubernetes/pkg/scheduler/framework/plugins/nodeaffinity
  k8s.io/kubernetes/pkg/scheduler/framework/plugins/nodename
  k8s.io/kubernetes/pkg/scheduler/framework/plugins/nodeports
  k8s.io/kubernetes/pkg/scheduler/framework/plugins/noderesources
  k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1
  k8s.io/kubernetes/pkg/scheduler/listers
  k8s.io/kubernetes/test/e2e/framework
  k8s.io/kubernetes/test/e2e/framework/kubectl
  k8s.io/kubernetes/test/e2e/system
  k8s.io/utils/io
  k8s.io/utils/mount

...

!!! Error in ./hack/verify-import-boss.sh:28
  Error in ./hack/verify-import-boss.sh:28. '$(kube::util::find-binary "import-boss") --verify-only "$@"' exited with status 1
Call stack:
  1: ./hack/verify-import-boss.sh:28 main(...)
Exiting with status 1

What you expected to happen:

I hope the check is always running to block invalid import ways at upstream CI system.

How to reproduce it (as minimally and precisely as possible):

As #81246 (comment)

1. Add line "k8s.io/kubernetes/test/e2e/framework/...", into arguments.InputDirs of staging/src/k8s.io/code-generator/cmd/import-boss/main.go
2. Run ./hack/verify-import-boss.sh

[oomichi]

/sig testing
/area e2e-test-framework