Ensure the log folder exists

Restarting the apache service under ubuntu read the envvars file.
This envvars contains the folder for logrotate. If the folder
doesn't exist or hasn't the apache permissions, the restart of
the service will fail.

We ensure here the folder properly exists, with the right
permissions.

Change-Id: I4abf785f6d3d8ca4a5fc3c9520d046618cf6f380

tasks/keystone_apache.yml

@@ -25,6 +25,13 @@
     system: "yes"
     shell: "/bin/false"
 
+- name: Ensure apache log folder exists
+  file:
+    dest: "{{ keystone_apache_default_log_folder }}"
+    state: directory
+    owner: "{{ keystone_apache_default_log_owner }}"
+    group: "{{ keystone_apache_default_log_grp }}"
+
 ## Workaround for https://github.com/ansible/ansible-modules-core/issues/5328
 ## TODO: Replace using apache2_module when fixed in Ansible release
 ## NOTE(cloudnull):

vars/redhat-7.yml

@@ -58,6 +58,9 @@ keystone_apache_default_sites:
   - "/etc/httpd/conf.d/ssl.conf"
 
 keystone_apache_conf: "/etc/httpd/conf/httpd.conf"
+keystone_apache_default_log_folder: "/var/log/httpd"
+keystone_apache_default_log_owner: "root"
+keystone_apache_default_log_grp: "root"
 keystone_apache_security_conf: "{{ keystone_apache_conf }}"
 
 keystone_apache_configs:

vars/ubuntu-16.04.yml

@@ -58,6 +58,9 @@ keystone_apache_default_sites:
 keystone_apache_site_available: "/etc/apache2/sites-available/keystone-httpd.conf"
 keystone_apache_site_enabled: "/etc/apache2/sites-enabled/keystone-httpd.conf"
 keystone_apache_conf: "/etc/apache2/apache2.conf"
+keystone_apache_default_log_folder: "/var/log/apache2"
+keystone_apache_default_log_owner: "root"
+keystone_apache_default_log_grp: "adm"
 keystone_apache_security_conf: "/etc/apache2/conf-available/security.conf"
 
 keystone_apache_configs: