AETHER-2697 Separate task for adding apt repository for Nginx

Change-Id: I0b84cb091a4c2926119b0b520a9bc78c309ec5a0
diff --git a/defaults/main.yml b/defaults/main.yml
index 14ee763..999ae37 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -11,6 +11,9 @@
 #   http://nginx.org/en/docs/ngx_core_module.html
 #   http://nginx.org/en/docs/http/ngx_http_core_module.html
 
+# Set true to use nginx.org package repo
+nginx_add_package_repo: true
+
 # http://nginx.org/en/docs/ngx_core_module.html#worker_processes
 nginx_conf_worker_processes: "auto"
 
diff --git a/tasks/Debian-repo.yml b/tasks/Debian-repo.yml
new file mode 100644
index 0000000..bab31ff
--- /dev/null
+++ b/tasks/Debian-repo.yml
@@ -0,0 +1,24 @@
+---
+# nginx tasks/Debian-repo.yml
+#
+# SPDX-FileCopyrightText: © 2021 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Install GPG to support adding apt repo keys
+  apt:
+    name: "gpg"
+    state: "present"
+    update_cache: true
+
+# Docs: http://nginx.org/en/linux_packages.html
+- name: Add NGINX apt repo key
+  apt_key:
+    data: "{{ lookup('file','nginx_signing.key') }}"
+    state: "present"
+
+- name: Add NGINX apt repo
+  apt_repository:
+    repo: >-
+      deb http://nginx.org/packages/{{ ansible_lsb['id'] | lower }}
+      {{ ansible_lsb['codename'] }} nginx
+    update_cache: true
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
index 3d1d8e8..9715868 100644
--- a/tasks/Debian.yml
+++ b/tasks/Debian.yml
@@ -4,25 +4,6 @@
 # SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
 # SPDX-License-Identifier: Apache-2.0
 
-- name: Install GPG to support adding apt repo keys
-  apt:
-    name: "gpg"
-    state: "present"
-    update_cache: true
-
-# Docs: http://nginx.org/en/linux_packages.html
-- name: Add NGINX apt repo key
-  apt_key:
-    data: "{{ lookup('file','nginx_signing.key') }}"
-    state: "present"
-
-- name: Add NGINX apt repo
-  apt_repository:
-    repo: >-
-      deb http://nginx.org/packages/{{ ansible_lsb['id'] | lower }}
-      {{ ansible_lsb['codename'] }} nginx
-    update_cache: true
-
 - name: Install NGINX packages (Debian)
   apt:
     name: "{{ nginx_packages }}"
diff --git a/tasks/main.yml b/tasks/main.yml
index b9d7f7b..14ed0a0 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -7,6 +7,10 @@
 - name: include OS-specific vars
   include_vars: "{{ ansible_os_family }}.yml"
 
+- name: include OS-specific package repo updates
+  include_tasks: "{{ ansible_os_family }}-repo.yml"
+  when: nginx_add_package_repo | bool
+
 - name: include OS-specific tasks
   include_tasks: "{{ ansible_os_family }}.yml"