Update copy from host options

This change removes some more boiler plate and ensures all of the
required files are copied into the base container image.

Change-Id: I4f74364d0969363297b286ae8327291659d20a00
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

defaults/main.yml

@@ -107,11 +107,20 @@ nspawn_cache_prep_dns:
 nspawn_cache_map: "{{ _nspawn_cache_map | default({}) }}"
 
 # Default list of files to copy from the host into the container when the
-# default cache is created.
+# default cache is created. This list is merged to create the list of files
+# to copy into the container base image which is captured under the
+# `nspawn_copy_from_host` option.
+nspawn_default_copy_from_host:
+  - /etc/default/locale
+  - /etc/environment
+  - /etc/localtime
+  - /etc/locale.conf
+  - /etc/protocols
+
 #  nspawn_copy_from_host:
 #    - /etc/resolve.conf
 #    - /etc/apt/sources.list
-nspawn_copy_from_host: "{{ _nspawn_copy_from_host | default([]) }}"
+nspawn_copy_from_host: "{{ nspawn_default_copy_from_host | union(_nspawn_copy_from_host | default([])) }}"
 
 # Default list of files to copy from the host into the container when the
 # default cache is created. This list will be merged with the option

vars/redhat-7.yml

@@ -58,6 +58,5 @@ _nspawn_cache_map:
   release: 7
 
 _nspawn_copy_from_host:
-  - /etc/localtime
   - /etc/pki/rpm-gpg/
   - /etc/yum.repos.d/

vars/suse-42.yml

@@ -54,9 +54,7 @@ _nspawn_cache_map:
   release: "{{ hostvars[physical_host]['ansible_distribution_version'] }}"
 
 _nspawn_copy_from_host:
-  - /etc/localtime
-  - /etc/zypp/repos.d/repo-oss.repo
-  - /etc/zypp/repos.d/repo-update.repo
+  - /etc/zypp
 
 ## Set default mirror for openSUSE repositories
 # NOTE(hwoarang): Ensure that the full path to the 'opensuse' directory is used.

vars/ubuntu-16.04.yml

@@ -55,7 +55,4 @@ _nspawn_cache_map:
   release: xenial
 
 _nspawn_copy_from_host:
-  - /etc/apt/apt.conf.d/
-  - /etc/apt/preferences.d/
-  - /etc/apt/sources.list
-  - /etc/localtime
+  - /etc/apt

vars/ubuntu-18.04.yml

@@ -55,7 +55,4 @@ _nspawn_cache_map:
   release: bionic
 
 _nspawn_copy_from_host:
-  - /etc/apt/apt.conf.d/
-  - /etc/apt/preferences.d/
-  - /etc/apt/sources.list
-  - /etc/localtime
+  - /etc/apt