aggregate coverage metrics of unit tests across packages (#115)

aggregate coverage metrics of unit tests across packages
diff --git a/openstack/db/v1/configurations/testing/doc.go b/openstack/db/v1/configurations/testing/doc.go
index 7603f83..60c997a 100644
--- a/openstack/db/v1/configurations/testing/doc.go
+++ b/openstack/db/v1/configurations/testing/doc.go
@@ -1 +1,2 @@
+// db_configurations_v1
 package testing
diff --git a/openstack/db/v1/databases/testing/doc.go b/openstack/db/v1/databases/testing/doc.go
index 7603f83..abdfab9 100644
--- a/openstack/db/v1/databases/testing/doc.go
+++ b/openstack/db/v1/databases/testing/doc.go
@@ -1 +1,2 @@
+// db_databases_v1
 package testing
diff --git a/openstack/db/v1/datastores/testing/doc.go b/openstack/db/v1/datastores/testing/doc.go
index 7603f83..8f06f86 100644
--- a/openstack/db/v1/datastores/testing/doc.go
+++ b/openstack/db/v1/datastores/testing/doc.go
@@ -1 +1,2 @@
+// db_datastores_v1
 package testing
diff --git a/openstack/db/v1/flavors/testing/doc.go b/openstack/db/v1/flavors/testing/doc.go
index 7603f83..0809266 100644
--- a/openstack/db/v1/flavors/testing/doc.go
+++ b/openstack/db/v1/flavors/testing/doc.go
@@ -1 +1,2 @@
+// db_flavors_v1
 package testing
diff --git a/openstack/db/v1/instances/testing/doc.go b/openstack/db/v1/instances/testing/doc.go
index 7603f83..386ac58 100644
--- a/openstack/db/v1/instances/testing/doc.go
+++ b/openstack/db/v1/instances/testing/doc.go
@@ -1 +1,2 @@
+// db_instances_v1
 package testing
diff --git a/openstack/db/v1/users/testing/doc.go b/openstack/db/v1/users/testing/doc.go
index 7603f83..3c98966 100644
--- a/openstack/db/v1/users/testing/doc.go
+++ b/openstack/db/v1/users/testing/doc.go
@@ -1 +1,2 @@
+// db_users_v1
 package testing