Add option for nova-libvirt container to log to stdout/stderr

This adds the option to get the nova-libvirt container to log to stdout.
The option is disabled by default.

bp logging-stdout-rsyslog

Change-Id: Ie769b4d93f3bd728b7efb84d283509db8213b5fc

docker/services/logging/stdout/nova-libvirt.yaml

@@ -0,0 +1,19 @@
+heat_template_version: pike
+
+description: >
+  OpenStack containerized Nova libvirt service
+
+outputs:
+  config_settings:
+    description: Extra hieradata needed to log to stdout.
+    value:
+      nova::compute::libvirt::log_outputs: '3:stderr'
+  docker_config:
+    description: Extra containers needed for logging to stdout or a sidecar container.
+    value: null
+  volumes:
+    description: The volumes needed to log to stdout or a sidecar container.
+    value: null
+  host_prep_tasks:
+    description: Extra ansible tasks needed for logging to files in the host.
+    value: null

docker/services/nova-libvirt.yaml

@@ -106,6 +106,9 @@ resources:
       RoleName: {get_param: RoleName}
       RoleParameters: {get_param: RoleParameters}
 
+  NovaLibvirtLogging:
+    type: OS::TripleO::Services::Logging::NovaLibvirt
+
 outputs:
   role_data:
     description: Role data for the Libvirt service.
@@ -114,6 +117,7 @@ outputs:
       config_settings:
         map_merge:
           - get_attr: [NovaLibvirtBase, role_data, config_settings]
+          - get_attr: [NovaLibvirtLogging, config_settings]
           - tripleo::profile::base::certmonger_user::libvirt_postsave_cmd: "true" # TODO: restart the libvirt container here
 
       logging_source: {get_attr: [NovaLibvirtBase, role_data, logging_source]}

environments/stdout-logging.yaml

@@ -7,3 +7,4 @@ resource_registry:
   OS::TripleO::Services::Logging::NovaApi: ../docker/services/logging/stdout/nova-api.yaml
   OS::TripleO::Services::Logging::NovaCommon: ../docker/services/logging/stdout/nova-common.yaml
   OS::TripleO::Services::Logging::NovaPlacement: ../docker/services/logging/stdout/nova-placement.yaml
+  OS::TripleO::Services::Logging::NovaLibvirt: ../docker/services/logging/stdout/nova-libvirt.yaml

overcloud-resource-registry-puppet.j2.yaml

@@ -305,6 +305,7 @@ resource_registry:
   OS::TripleO::Services::Logging::NovaApi: docker/services/logging/files/nova-api.yaml
   OS::TripleO::Services::Logging::NovaCommon: docker/services/logging/files/nova-common.yaml
   OS::TripleO::Services::Logging::NovaPlacement: docker/services/logging/files/nova-placement.yaml
+  OS::TripleO::Services::Logging::NovaLibvirt: OS::Heat::None
 
 parameter_defaults:
   EnablePackageInstall: false