Use RFC 1738 format for redis db connection

Change-Id: I7568bc46d3b28fefa56efc3c6943066268ffa61d

.config

@@ -1,7 +1,3 @@
-redis:
-    host: localhost
-    port: '6379'
-
-
+redis: redis://localhost:6379/1
 solar_db: sqlite:////tmp/solar.db
 # solar_db: riak://10.0.0.2:8087

bootstrap/playbooks/solar.yaml

@@ -41,6 +41,11 @@
         line: "solar_db: riak://10.0.0.2:8087"
         state: present
         create: yes
+    - lineinfile:
+        dest: /home/vagrant/.solar_config_override
+        line: "redis: redis://10.0.0.2:6379/1"
+        state: present
+        create: yes
 
 - hosts: all
   tasks:

solar/config.py

@@ -23,7 +23,7 @@ import yaml
 CWD = os.getcwd()
 
 C = Bunch(solar_db="")
-C.redis = Bunch(port='6379', host='10.0.0.2')
+C.redis = 'redis://localhost:6379/1'
 
 
 def _lookup_vals(setter, config, prefix=None):

solar/orchestration/runner.py

@@ -15,8 +15,10 @@
 from celery import Celery
 
 from solar.config import C
+from solar.utils import parse_database_conn
 
-_url = 'redis://{}:{}/1'.format(C.redis.host, C.redis.port)
+conn, _ = parse_database_conn(C.redis)
+_url = 'redis://{}:{}/{}'.format(conn.host, conn.port, conn.database)
 
 app = Celery(
     include=['solar.system_log.tasks', 'solar.orchestration.tasks'],