Merge pull request #31087 from gen0cide-/fix-etcd-version-check

Automatic merge from submit-queue

Updating version check for etcd

<!--  Thanks for sending a pull request!  Here are some tips for you:
1. If this is your first time, read our contributor guidelines https://github.com/kubernetes/kubernetes/blob/master/CONTRIBUTING.md and developer guide https://github.com/kubernetes/kubernetes/blob/master/docs/devel/development.md
2. If you want *faster* PR reviews, read how: https://github.com/kubernetes/kubernetes/blob/master/docs/devel/faster_reviews.md
3. Follow the instructions for writing a release note: https://github.com/kubernetes/kubernetes/blob/master/docs/devel/pull-requests.md#release-notes
-->

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

Currently, if you `make build`, etcd is not properly version checked because `etcd -version` does multi-line output. This output cannot be version compared. This small change fixes that.

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

**Special notes for your reviewer**:

**Release note**:
<!--  Steps to write your release note:
1. Use the release-note-* labels to set the release note state (if you have access) 
2. Enter your extended release note in the below block; leaving it blank means using the PR title as the release note. If no release note is required, just write `NONE`. 
-->
```release-note
```

hack/lib/etcd.sh

@@ -32,7 +32,7 @@ kube::etcd::start() {
     exit 1
   fi
 
-  version=$(etcd -version | cut -d " " -f 3)
+  version=$(etcd --version | head -n 1 | cut -d " " -f 3)
   if [[ "${version}" < "${ETCD_VERSION}" ]]; then
    kube::log::usage "etcd version ${ETCD_VERSION} or greater required."
    kube::log::info "You can use 'hack/install-etcd.sh' to install a copy in third_party/."