FIX: stop using su to daemonize stuff, we have no process to talk to

FIX: use fast shutdown for postgres

templates/postgres.template.yml

@@ -157,7 +157,9 @@ run:
 
   - exec:
       background: true
-      cmd: su - postgres -c '/usr/lib/postgresql/9.3/bin/postmaster -D /etc/postgresql/9.3/main'
+      # use fast shutdown for pg
+      stop_signal: INT
+      cmd: HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/9.3/bin/postmaster -D /etc/postgresql/9.3/main
 
   # give db a few secs to start up
   - exec: "sleep 5"

templates/redis.template.yml

@@ -39,7 +39,7 @@ hooks:
   before_code:
     - exec:
         background: true
-        cmd: su - redis -s /bin/bash -c '/usr/bin/redis-server /etc/redis/redis.conf'
+        cmd: exec chpst -u redis -U redis /usr/bin/redis-server /etc/redis/redis.conf
   after_code:
     - replace:
        filename: /etc/service/unicorn/run