debian: add support

This patch updates the meta and creates a debian
var file to reflect it's support of Debian accordingly.

Depends-On: I2653aea2aebc95bfc67fe49bc66fb68a4f996170

Change-Id: I310557ba51cb29bfe9061603bb5bbe9912a57a98

meta/main.yml

@@ -20,6 +20,9 @@ galaxy_info:
   license: Apache2
   min_ansible_version: 1.9.4
   platforms:
+    - name: Debian
+      versions:
+        - stretch
     - name: Ubuntu
       versions:
         - bionic

vars/debian.yml

@@ -0,0 +1,19 @@
+---
+# Copyright 2018, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+_nspawn_map:
+  distro: debian
+  arch: "{{ nspawn_architecture_mapping[container_architecture] }}"
+  release: stretch