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/).
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- 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:kubernetes@build.opensuse.org>
+ 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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