fix: pin kubectl version

defaults/main.yml

@@ -18,7 +18,7 @@ kapp_installation_path: /opt/kapp
 kapp_version: 0.47.0
 # kubectl
 kubectl_installation_path: /opt/kubectl
-kubectl_version_url: https://dl.k8s.io/release/stable.txt
+kubectl_version: 1.21.13
 # pack
 pack_installation_path: /opt/pack
 pack_version: 0.26.0

molecule/default/verify_kubectl.yml

@@ -3,15 +3,7 @@
   ansible.builtin.command: kubectl version --client=true --output=json
   register: output
   changed_when: false
-- name: Retrieve kubectl latest version
-  ansible.builtin.uri:
-    url: "{{ kubectl_version_url }}"
-    return_content: true
-  register: kubectl_version
-- name: debug
-  ansible.builtin.debug:
-    var: kubectl_version.content
 - name: Assert that kubectl is installed
   ansible.builtin.assert:
     that:
-    - "'{{ kubectl_version.content }}' in output.stdout"
+    - "'{{ kubectl_version }}' in output.stdout"

tasks/install_kubectl.yml

 ---
 
-- name: Kubectl | Retrieve kubectl latest version
-  ansible.builtin.uri:
-    url: "{{ kubectl_version_url }}"
-    return_content: true
-  register: kubectl_version
-
 - name: Kubectl | Retrieve kubectl checksum
   ansible.builtin.uri:
-    url: "https://dl.k8s.io/{{ kubectl_version.content }}/bin/linux/amd64/kubectl.sha256"
+    url: "https://dl.k8s.io/v{{ kubectl_version }}/bin/linux/amd64/kubectl.sha256"
     return_content: true
   register: kubectl_checksum
 
 - name: Kubectl | Set facts
   ansible.builtin.set_fact:
-    kubectl_download_url: "https://dl.k8s.io/release/{{ kubectl_version.content }}/bin/linux/amd64/kubectl"
+    kubectl_download_url: "https://dl.k8s.io/release/v{{ kubectl_version }}/bin/linux/amd64/kubectl"
     kubectl_checksum_url: "sha256:{{ kubectl_checksum.content }}"
-    kubectl_installation_subpath: "{{ kubectl_installation_path }}/{{ kubectl_version.content }}"
+    kubectl_installation_subpath: "{{ kubectl_installation_path }}/{{ kubectl_version }}"
 
 - name: Kubectl | Check if kubectl is already installed
   ansible.builtin.stat: