Rename package lists (and related vars) appropriately

In order to make it easier to differentiate between the lists of
python packages, distribution packages, downloaded packages,
package pins and other similar variables the variable names are
being changed to ensure that they have a more explicit suffix
that defines the purpose and makes the naming more consistent.

This is to facilitate a lookup plugin which will be able to look
up all the package lists and present them as a consolidated piece
of data which may be used for artifact preparation.

Change-Id: Ib3d6dea38bf4d570e6b9501f9cb89632639d586e

defaults/main.yml

@@ -39,6 +39,6 @@ memcached_connections: 1024
 memcached_threads: 4
 memcached_file_limits: "{{ memcached_connections | int + 1024 }}"
 
-memcached_packages: []
-memcached_test_packages: []
+memcached_distro_packages: []
+memcached_test_distro_packages: []
 install_test_packages: False

releasenotes/notes/package-list-name-changes-a5571c0b72faadf2.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - The variable ``memcached_apt_packages`` has been renamed to
+    ``memcached_distro_packages``.

tasks/install-apt.yml

@@ -34,7 +34,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items: "{{ memcached_packages }}"
+  with_items: "{{ memcached_distro_packages }}"
 
 - name: Install apt packages for testing
   apt:
@@ -44,5 +44,5 @@
   until: install_test_packages|success
   retries: 5
   delay: 2
-  with_items: "{{ memcached_test_packages }}"
+  with_items: "{{ memcached_test_distro_packages }}"
   when: install_test_packages|bool

tasks/install-yum.yml

@@ -28,7 +28,7 @@
   until: install_yum_packages | success
   retries: 5
   delay: 2
-  with_items: "{{ memcached_packages }}"
+  with_items: "{{ memcached_distro_packages }}"
 
 - name: Install yum packages for testing
   yum:
@@ -38,5 +38,5 @@
   until: install_yum_test_packages | success
   retries: 5
   delay: 2
-  with_items: "{{ memcached_test_packages }}"
+  with_items: "{{ memcached_test_distro_packages }}"
   when: install_test_packages|bool

vars/debian.yml

@@ -15,10 +15,10 @@
 
 memcached_user: memcache
 
-memcached_packages:
+memcached_distro_packages:
   - memcached
 
-memcached_test_packages:
+memcached_test_distro_packages:
   - netcat
 
 memcached_conf_template: memcached.conf.debian.j2

vars/redhat.yml

@@ -15,10 +15,10 @@
 
 memcached_user: memcached
 
-memcached_packages:
+memcached_distro_packages:
   - memcached
 
-memcached_test_packages:
+memcached_test_distro_packages:
   - nc
 
 memcached_conf_template: memcached.redhat.j2