fix: downgrade cloud-init package for ubuntu OS (#938)

ansible/roles/packages/tasks/debian.yaml

@@ -31,6 +31,32 @@
   retries: 3
   delay: 3
 
+# The latest cloud-init version '23.3.1-0ubuntu1~20.04.1 is unable to run #boothook created by CAPA
+# https://github.com/kubernetes-sigs/cluster-api-provider-aws/blob/0bf78b04b305a77aec37a68c107102231faa7a16/pkg/cloud/services/secretsmanager/secret_fetch_script.go#L20
+# This is a workaround to downgrade to older cloud-init version. 
+# Once the fix is available in cloud-init and base ubuntu AMI are built with the fixed cloud-init,
+# we can revert to using cloud-init version provided by the base AMI. 
+- name: Install specific cloud-init version 23.2.1-0ubuntu0~20.04.2
+  apt:
+    deb: https://launchpad.net/ubuntu/+source/cloud-init/23.2.1-0ubuntu0~20.04.2/+build/26374992/+files/cloud-init_23.2.1-0ubuntu0~20.04.2_all.deb
+    state: present
+    force_apt_get: true
+    allow_downgrade: true
+  when: ansible_os_family == "Debian"
+
+- name: Install cloud-init packages
+  apt:
+    name: "{{ packages }}"
+    state: present
+    force_apt_get: true
+  vars:
+    packages:
+      - cloud-guest-utils
+      - cloud-initramfs-copymods
+      - cloud-initramfs-dyn-netconf
+      - cloud-initramfs-growroot
+  when: ansible_os_family == "Debian"
+
 - name: remove version hold for kubelet and kubectl packages
   command: apt-mark unhold {{ item }}
   with_items: