UnixPB : Install LibFFI6 On Ubuntu 20/22 on s390x (#2831)

* Update Ubuntu.yml

* Fix when clauses for libffi6 installation

* Linter fixes

* Linter fixes.

Author: steelhead31

ansible/playbooks/AdoptOpenJDK_Unix_Playbook/roles/Common/tasks/Ubuntu.yml

@@ -111,6 +111,23 @@
   when:
     - ansible_distribution_major_version == "18"
 
+- name: Download LibFFI6 v3.2.1_8 For Ubuntu 20 or 22 on S390X
+  get_url:
+    url: https://mirrors.mit.edu/ubuntu-ports/pool/main/libf/libffi/libffi6_3.2.1-8_s390x.deb
+    dest: /tmp/libffi6_3.2.1-8_s390x.deb
+    force: no
+    mode: 0755
+    checksum: 05e456a2e8ad9f20db846ccb96c483235c3243e27025c3e8e8e358411fd48be9
+  when:
+    - (ansible_distribution_major_version == "20" and ansible_architecture == "s390x") or
+      (ansible_distribution_major_version == "22" and ansible_architecture == "s390x")
+
+- name: Install LibFFI6 v3.2.1_8 For Ubuntu 20 or 22 on S390X
+  apt: deb="/tmp/libffi6_3.2.1-8_s390x.deb"
+  when:
+    - (ansible_distribution_major_version == "20" and ansible_architecture == "s390x") or
+      (ansible_distribution_major_version == "22" and ansible_architecture == "s390x")
+
 ####################
 # Set default Java #
 ####################