Updates for Train

Changed:
- Update release to train
- Update to mariadb ~> 4.0

Fixed:
- Migrate to using Chef::Log.warn instead of the log resource to fix
  idempotency issues.

Depends-On: https://review.opendev.org/731851
Change-Id: Ia705cf4fb00098ba5d34f22268c0e409b82580a0

README.rst

@@ -15,7 +15,7 @@ Requirements
 ============
 
 - Chef 15 or higher
-- Chef Workstation 0.15.18 for testing (also includes Berkshelf for cookbook
+- Chef Workstation 0.18.3 for testing (also includes Berkshelf for cookbook
   dependency resolution)
 
 Platforms
@@ -30,8 +30,8 @@ Cookbooks
 
 The following cookbooks are dependencies:
 
-- 'mariadb', '~> 3.1'
-- 'openstack-common', '~> 19.0.0'
+- 'mariadb', '~> 4.0'
+- 'openstack-common', '~> 20.0.0'
 
 Usage
 =====

metadata.rb

@@ -3,15 +3,15 @@ maintainer       'openstack-chef'
 maintainer_email 'openstack-discuss@lists.openstack.org'
 license          'Apache-2.0'
 description      'Provides the shared database configuration for OpenStack'
-version          '19.0.0'
+version          '20.0.0'
 
 %w(ubuntu redhat centos).each do |os|
   supports os
 end
 
-depends 'openstack-common', '>= 19.0.0'
+depends 'openstack-common', '>= 20.0.0'
 
-depends 'mariadb', '~> 3.1'
+depends 'mariadb', '~> 4.0'
 
 issues_url 'https://launchpad.net/openstack-chef'
 source_url 'https://opendev.org/openstack/cookbook-openstack-ops-database'

recipes/openstack-db.rb

@@ -34,6 +34,6 @@ node['openstack']['common']['services'].each do |service, project|
       pass password
     end
   rescue Net::HTTPServerException, ChefVault::Exceptions::KeysNotFound
-    log "No databag item containing the database password for #{project} was found, so no database was created"
+    Chef::Log.warn("No databag item containing the database password for #{project} was found, so no database was created")
   end
 end