DCD-224: Generalise the AWS base package install role.

aws_jira_dc_node.yml

@@ -7,7 +7,8 @@
     atl_product_user: jira
 
   roles:
-    - aws_linux2_common
+    - linux_common
+    - aws_common
     - aws_linux2_product_common
     - product_base
     - aws_efs_config

roles/aws_common/tasks/amazon.yml

@@ -0,0 +1,11 @@
+---
+
+- name: Install AWS support packages
+  yum:
+    name:
+      - amazon-ssm-agent
+      - amazon-efs-utils
+
+# Amazon Linux 2 supplies extra packages via a special command.
+- name: Enable Postgresql from 'extras'
+  command: amazon-linux-extras enable -y "postgresql{{ postgres_version }}"

roles/aws_common/tasks/main.yml

@@ -0,0 +1,4 @@
+---
+
+- name: Install distro-specific prerequisites
+  include: "{{ ansible_distribution|lower }}.yml"

roles/aws_linux2_common/tasks/main.yml

@@ -1,13 +0,0 @@
----
-
-
-- name: Install AWS support packages
-  yum:
-    name:
-      - amazon-ssm-agent
-      - amazon-efs-utils
-
-- name: Install common util packages
-  yum:
-    name:
-      - jq