CI: factorize tests into a single playbook

This allows to use kubespray_defaults (once) instead of redefining
defaults in the tests.
Test test files becomes imported tasks rather thand standalone
playbooks.

tests/testcases/100_check-k8s-conformance.yml

@@ -1,38 +1,22 @@
 ---
-- name: Testcases for kubernetes conformance
-  hosts: kube_control_plane[0]
-  vars:
-    sonobuoy_version: 0.56.11
-    sonobuoy_arch: amd64
-    sonobuoy_parallel: 30
-    sonobuoy_path: /usr/local/bin/sonobuoy
-    sonobuoy_mode: Quick
+- name: Download sonobuoy
+  get_url:
+    url: "https://github.com/heptio/sonobuoy/releases/download/v{{ sonobuoy_version }}/sonobuoy_{{ sonobuoy_version }}_linux_{{ sonobuoy_arch }}.tar.gz"
+    dest: /tmp/sonobuoy.tar.gz
+    mode: "0644"
 
-  tasks:
-  - name: Run sonobuoy
-    when:
-    - sonobuoy_enabled is defined
-    - sonobuoy_enabled
-    block:
-    - name: Download sonobuoy
-      get_url:
-        url: "https://github.com/heptio/sonobuoy/releases/download/v{{ sonobuoy_version }}/sonobuoy_{{ sonobuoy_version }}_linux_{{ sonobuoy_arch }}.tar.gz"
-        dest: /tmp/sonobuoy.tar.gz
-        mode: "0644"
+- name: Extract sonobuoy
+  unarchive:
+    src: /tmp/sonobuoy.tar.gz
+    dest: /usr/local/bin/
+    copy: false
 
-    - name: Extract sonobuoy
-      unarchive:
-        src: /tmp/sonobuoy.tar.gz
-        dest: /usr/local/bin/
-        copy: false
+- name: Run sonobuoy
+  command: "{{ sonobuoy_path }} run --mode {{ sonobuoy_mode }} --e2e-parallel {{ sonobuoy_parallel }} --wait"
 
-    - name: Run sonobuoy
-      command: "{{ sonobuoy_path }} run --mode {{ sonobuoy_mode }} --e2e-parallel {{ sonobuoy_parallel }} --wait"
-      when: sonobuoy_enabled | default(false)
+- name: Run sonobuoy retrieve
+  command: "{{ sonobuoy_path }} retrieve"
+  register: sonobuoy_retrieve
 
-    - name: Run sonobuoy retrieve
-      command: "{{ sonobuoy_path }} retrieve"
-      register: sonobuoy_retrieve
-
-    - name: Run inspect results
-      command: "{{ sonobuoy_path }} results {{ sonobuoy_retrieve.stdout }} --plugin e2e --mode report"
+- name: Run inspect results
+  command: "{{ sonobuoy_path }} results {{ sonobuoy_retrieve.stdout }} --plugin e2e --mode report"