✅ Skip checks for Ubuntu 18.04

Curl does not manage proxy protocol...

tests/includes/post_common.yml

@@ -240,17 +240,20 @@
 # --------------------------------
 # Check Proxy protocol
 # --------------------------------
-- name: SHELL | Check HTTP proxy protocol
-  ansible.builtin.shell: set -o pipefail && curl -I --haproxy-protocol http://test-ssl-proxy-protocol.local:20080 | grep -qi 'X-Proxy-Protocol'
-  args:
-    executable: /bin/bash
-  changed_when: false
+- name: BLOCK - Check proxy protocol
+  when: not (ansible_distribution == 'Ubuntu' and ansible_distribution_major_version | int == 18)
+  block:
+    - name: SHELL | Check HTTP proxy protocol
+      ansible.builtin.shell: set -o pipefail && curl -I --haproxy-protocol http://test-ssl-proxy-protocol.local:20080 | grep -qi 'X-Proxy-Protocol'
+      args:
+        executable: /bin/bash
+      changed_when: false
 
-- name: SHELL | Check HTTPS proxy protocol
-  ansible.builtin.shell: set -o pipefail && curl -I --haproxy-protocol -k https://test-ssl-proxy-protocol.local:20443 | grep -qi 'X-Proxy-Protocol'
-  args:
-    executable: /bin/bash
-  changed_when: false
+    - name: SHELL | Check HTTPS proxy protocol
+      ansible.builtin.shell: set -o pipefail && curl -I --haproxy-protocol -k https://test-ssl-proxy-protocol.local:20443 | grep -qi 'X-Proxy-Protocol'
+      args:
+        executable: /bin/bash
+      changed_when: false
 
 # --------------------------------
 # Check HTTP2