Add redis container

The patch adds a redis container for kolla. It's highly influenced by
memcached's container.

Implemenets: blueprint redis-container
Change-Id: Ib2ac6d6b9f01b8514728790dd474236fd60a62fd

docker/redis/Dockerfile.j2

@@ -0,0 +1,20 @@
+FROM {{ namespace }}/{{ image_prefix }}base:{{ tag }}
+MAINTAINER {{ maintainer }}
+
+{% block redis_header %}{% endblock %}
+
+{% import "macros.j2" as macros with context %}
+
+{{ macros.configure_user(name='redis', homedir='/run/redis') }}
+
+{% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
+    {% set redis_packages = ['redis'] %}
+{% elif base_distro in ['ubuntu', 'debian'] %}
+    {% set redis_packages = ['redis-server'] %}
+{% endif %}
+{{ macros.install_packages(redis_packages | customizable("packages")) }}
+
+{% block redis_footer %}{% endblock %}
+{% block footer %}{% endblock %}
+
+USER redis

kolla/common/config.py

@@ -51,6 +51,7 @@ _PROFILE_OPTS = [
                     'mongodb',
                     'openvswitch',
                     'rabbitmq',
+                    'redis',
                     'tgtd',
                 ],
                 help='Infra images'),
@@ -89,6 +90,7 @@ _PROFILE_OPTS = [
                     'octavia',
                     'panko',
                     'rally',
+                    'redis',
                     'sahara',
                     'searchlight',
                     'senlin',
@@ -757,6 +759,10 @@ USERS = {
         'uid': 42459,
         'gid': 42459,
     },
+    'redis-user': {
+        'uid': 42460,
+        'gid': 42460,
+    },
 }
 
 

releasenotes/notes/redis-container-810eec9915d426d8.yaml

@@ -0,0 +1,3 @@
+---
+features:
+    - Add a redis image used by ceilometer and zaqar