CI: streamline packet jobs definition

- Take advantage of `parallel:matrix` to make the jobs definition shorter
  and more readable.
- Remove helper scripts which are no longer needed
- Remove redundant indirection in the gitlab-ci pipelines definitions
  (only one user)

tests/files/ubuntu24-calico-etcd-datastore.yml

@@ -0,0 +1,46 @@
+---
+# Instance settings
+cloud_image: ubuntu-2404
+mode: node-etcd-client
+vm_memory: 1800
+
+# Kubespray settings
+auto_renew_certificates: true
+
+# Currently ipvs not available on KVM: https://packages.ubuntu.com/search?suite=noble&arch=amd64&mode=exactfilename&searchon=contents&keywords=ip_vs_sh.ko
+kube_proxy_mode: nftables
+enable_nodelocaldns: false
+
+containerd_registries:
+  "docker.io": "https://mirror.gcr.io"
+
+containerd_registries_mirrors:
+  - prefix: docker.io
+    mirrors:
+      - host: https://mirror.gcr.io
+        capabilities: ["pull", "resolve"]
+        skip_verify: false
+  - prefix: 172.19.16.11:5000
+    mirrors:
+      - host: http://172.19.16.11:5000
+        capabilities: ["pull", "resolve", "push"]
+        skip_verify: true
+
+calico_datastore: "etcd"
+
+# Test kubeadm patches
+kubeadm_patches:
+  - target: kube-apiserver
+    patch:
+      metadata:
+        annotations:
+          example.com/test: "true"
+        labels:
+          example.com/prod_level: "prep"
+  - target: kube-controller-manager
+    patch:
+      metadata:
+        annotations:
+          example.com/test: "false"
+        labels:
+          example.com/prod_level: "prep"