Add handler flushing to roles that need it

This patch adds handler flushing as the last task in each role to ensure
that there are log files present when the rsyslog client configuration
task is executed a little later in the playbook that consumes the role.

Closes-Bug: #1458822
Change-Id: I92a26b620aa7bc0fbe33175594d37da7d5aca7df

playbooks/roles/galera_server/tasks/main.yml

@@ -24,3 +24,6 @@
 
 - include: galera_add_node.yml
   when: inventory_hostname != groups['galera_all'][0]
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/lxc_hosts/tasks/main.yml

@@ -20,3 +20,5 @@
 - include: lxc_dnsmasq_cleanup.yml
 - include: lxc_cache.yml
   when: lxc_container_caches is defined
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_glance/tasks/main.yml

@@ -25,3 +25,6 @@
 - include: glance_service_setup.yml
   when: >
     inventory_hostname == groups['glance_all'][0]
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_heat/tasks/main.yml

@@ -31,3 +31,6 @@
     inventory_hostname == groups['heat_all'][0]
 
 - include: heat_upstart_init.yml
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_keystone/tasks/main.yml

@@ -27,3 +27,6 @@
 - include: keystone_service_setup.yml
   when: >
     inventory_hostname == groups['keystone_all'][0]
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_neutron/tasks/main.yml

@@ -30,3 +30,6 @@
     inventory_hostname in groups['neutron_agent']
 
 - include: neutron_upstart_init.yml
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_nova/tasks/main.yml

@@ -38,3 +38,5 @@
   tags:
     - nova-compute
 
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_swift/tasks/main.yml

@@ -41,3 +41,6 @@
 - include: swift_service_setup.yml
   when: >
     inventory_hostname == groups['swift_all'][0]
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/os_tempest/tasks/main.yml

@@ -24,3 +24,6 @@
 
 - include: tempest_install.yml
 - include: tempest_post_install.yml
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/rabbitmq_server/tasks/main.yml

@@ -26,3 +26,6 @@
 - include: rabbitmq_cluster_join.yml
   when: >
     inventory_hostname != groups['rabbitmq_all'][0]
+
+- name: Flush handlers
+  meta: flush_handlers

playbooks/roles/repo_server/tasks/main.yml

@@ -32,3 +32,6 @@
 - include: repo_sync_manager.yml
   when: >
     inventory_hostname == groups['pkg_repo'][0]
+
+- name: Flush handlers
+  meta: flush_handlers