Merge pull request #47181 from dims/fail-on-swap-enabled

Automatic merge from submit-queue (batch tested with PRs 50119, 48366, 47181, 41611, 49547)

Fail on swap enabled and deprecate experimental-fail-swap-on flag

**What this PR does / why we need it**:

    * Deprecate the old experimental-fail-swap-on
    * Add a new flag fail-swap-on and set it to true

    Before this change, we would not fail when swap is on. With this
    change we fail for everyone when swap is on, unless they explicitly
    set --fail-swap-on to false.

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

Fixes #34726

**Special notes for your reviewer**:

**Release note**:

```release-note
Kubelet will by default fail with swap enabled from now on. The experimental flag "--experimental-fail-swap-on" has been deprecated, please set the new "--fail-swap-on" flag to false if you wish to run with /proc/swaps on.
```

hack/verify-flags/known-flags.txt

@@ -271,6 +271,7 @@ external-hostname
 external-ip
 external-name
 extra-peer-dirs
+fail-swap-on
 failover-timeout
 failure-domains
 fake-clientset