Merge pull request #40516 from shashidharatd/kubefed-1

Automatic merge from submit-queue

[Federation][kubefed] Add option to expose federation apiserver on nodeport service

**What this PR does / why we need it**:
This PR adds an option to kubefed to expose federation api server over nodeport. This can be useful to deploy federation in non-cloud environments. This PR is target to address #39271

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```
[Federation] kubefed init learned a new flag, `--api-server-service-type`, that allows service type to be specified for the federation API server.
[Federation] kubefed init also learned a new flag, `--api-server-advertise-address`, that allows specifying advertise address for federation API server in case the service type is NodePort.
```

@kubernetes/sig-federation-misc @madhusudancs

hack/verify-flags/known-flags.txt

@@ -19,6 +19,8 @@ api-prefix
 api-rate
 api-server-port
 api-servers
+api-server-advertise-address
+api-server-service-type
 api-token
 api-version
 apiserver-count