Use systemd-journald instead of log files

This patch aims to migrate service from usage of regular syslog files
to journald. We also disable uwsgi logging, since it dublicates
requests that are logged by service itself.

Change-Id: I4168cd484ef52cc7b47efdbcc26d3d3550d28654

defaults/main.yml

@@ -67,6 +67,7 @@ masakari_pip_packages:
   - python-keystoneclient
   - python-memcached
   - python-swiftclient
+  - systemd-python
   - uwsgi
   - keystoneauth1
 
@@ -117,7 +118,6 @@ masakari_enable_v1_api: True
 
 masakari_etc_dir: /etc/masakari
 masakari_monitor_etc_dir: /etc/masakarimonitors
-masakari_log_dir: /var/log/masakari
 masakari_config_options: --config-file {{ masakari_etc_dir }}/masakari.conf
 
 ## Services

tasks/masakari_pre_install.yml

@@ -50,8 +50,6 @@
     - path: "{{ masakari_monitor_etc_dir }}"
       mode: "0750"
       condition: "{{ inventory_hostname in groups['masakari_monitor'] }}"
-    - path: "{{ masakari_log_dir }}"
-      mode: "0755"
     - path: "{{ masakari_system_user_home }}"
     - path: "{{ masakari_system_user_home }}/cache/api"
       mode: "0700"

templates/masakari.conf.j2

@@ -6,7 +6,7 @@ masakari_api_listen = 0.0.0.0
 # Enable to specify port other than default
 masakari_api_listen_port = 15868
 debug = False
-log_dir = {{ masakari_log_dir }}
+use_journal = true
 auth_strategy = keystone
 notification_driver = taskflow_driver
 # Nova endpoint