Update SUSE install-kubectl-linux.md

Author: fcsgehrke

content/en/docs/tasks/tools/install-kubectl-linux.md

@@ -222,11 +222,42 @@ before running `zypper update`. This procedure is described in more detail in
 [Changing The Kubernetes Package Repository](/docs/tasks/administer-cluster/kubeadm/change-package-repository/).
 {{< /note >}}
 
-   2. Install kubectl using `zypper`:
+2. Update `zypper` and confirm the new repo addition:
+   
+   ```bash
+   sudo zypper update
+   ```
+
+   When this message appears, press 't' or 'a':
+
+   ```
+   New repository or package signing key received:
+
+   Repository:       Kubernetes
+   Key Fingerprint:  1111 2222 3333 4444 5555 6666 7777 8888 9999 AAAA
+   Key Name:         isv:kubernetes OBS Project <isv:[email protected]>
+   Key Algorithm:    RSA 2048
+   Key Created:      Thu 25 Aug 2022 01:21:11 PM -03
+   Key Expires:      Sat 02 Nov 2024 01:21:11 PM -03 (expires in 85 days)
+   Rpm Name:         gpg-pubkey-9a296436-6307a177
+
+   Note: Signing data enables the recipient to verify that no modifications occurred after the data
+   were signed. Accepting data with no, wrong or unknown signature can lead to a corrupted system
+   and in extreme cases even to a system compromise.
+
+   Note: A GPG pubkey is clearly identified by its fingerprint. Do not rely on the key's name. If
+   you are not sure whether the presented key is authentic, ask the repository provider or check
+   their web site. Many providers maintain a web page showing the fingerprints of the GPG keys they
+   are using.
+
+   Do you want to reject the key, trust temporarily, or trust always? [r/t/a/?] (r): a
+   ```
+   
+3. Install kubectl using `zypper`:
 
-      ```bash
-      sudo zypper install -y kubectl
-      ```
+   ```bash
+   sudo zypper install -y kubectl
+   ```
 
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