Use python3 packages on Ubuntu

Python2.7 is going EOL soon, let us deploy python3 for Rocky from the
start, so we avoid having to switch later.

Clean up some unused pkg attributes.

Depends-On: https://review.opendev.org/682918
Change-Id: I1a11352f54b4126d7b510aa74d9ed1c4a33348c1

attributes/default.rb

@@ -97,32 +97,24 @@ when 'rhel' # :pragma-foodcritic: ~FC024 - won't fix this
     'cinder_backup_service' => 'openstack-cinder-backup',
     'cinder_iscsitarget_packages' => ['targetcli', 'dbus-python'],
     'cinder_iscsitarget_service' => 'target',
-    'cinder_nfs_packages' => ['nfs-utils', 'nfs-utils-lib'],
-    'cinder_emc_packages' => ['pywbem'],
-    'cinder_svc_packages' => ['sysfsutils'],
     'cinder_lvm_packages' => ['lvm2'],
-    'cinder_flashsystem_packages' => ['sysfsutils'],
     'package_overrides' => '',
   }
 when 'debian'
   # operating system user and group names
   default['openstack']['block-storage']['platform'] = {
     'cinder_common_packages' => ['cinder-common'],
-    'cinder_api_packages' => ['cinder-api'],
+    'cinder_api_packages' => ['libapache2-mod-wsgi-py3', 'python3-cinder', 'cinder-api'],
     'cinder_api_service' => 'cinder-api',
-    'cinder_volume_packages' => ['cinder-volume', 'qemu-utils', 'thin-provisioning-tools'],
+    'cinder_volume_packages' => ['python3-cinder', 'cinder-volume', 'qemu-utils', 'thin-provisioning-tools'],
     'cinder_volume_service' => 'cinder-volume',
-    'cinder_scheduler_packages' => ['cinder-scheduler'],
+    'cinder_scheduler_packages' => ['python3-cinder', 'cinder-scheduler'],
     'cinder_scheduler_service' => 'cinder-scheduler',
-    'cinder_backup_packages' => ['cinder-backup'],
+    'cinder_backup_packages' => ['python3-cinder', 'cinder-backup'],
     'cinder_backup_service' => 'cinder-backup',
     'cinder_iscsitarget_packages' => ['targetcli-fb'],
     'cinder_iscsitarget_service' => 'tgt',
-    'cinder_nfs_packages' => ['nfs-common'],
-    'cinder_emc_packages' => ['python-pywbem'],
-    'cinder_svc_packages' => ['sysfsutils'],
     'cinder_lvm_packages' => ['lvm2'],
-    'cinder_flashsystem_packages' => ['sysfsutils'],
     'package_overrides' => '',
   }
 end

spec/api_spec.rb

@@ -43,11 +43,13 @@ describe 'openstack-block-storage::api' do
     end
 
     it 'upgrades cinder api packages' do
+      expect(chef_run).to upgrade_package('libapache2-mod-wsgi-py3')
+      expect(chef_run).to upgrade_package('python3-cinder')
       expect(chef_run).to upgrade_package('cinder-api')
     end
 
-    it 'upgrades mysql python package' do
-      expect(chef_run).to upgrade_package('python-mysqldb')
+    it 'upgrades mysql python3 package' do
+      expect(chef_run).to upgrade_package('python3-mysqldb')
     end
 
     it 'runs db migrations' do

spec/backup_spec.rb

@@ -29,8 +29,8 @@ describe 'openstack-block-storage::backup' do
         expect(chef_run.service('cinder-backup')).to subscribe_to('template[/etc/cinder/cinder.conf]')
       end
 
-      it 'upgrades mysql python package' do
-        expect(chef_run).to upgrade_package 'python-mysqldb'
+      it 'upgrades mysql python3 package' do
+        expect(chef_run).to upgrade_package 'python3-mysqldb'
       end
     end
   end

spec/scheduler_spec.rb

@@ -26,8 +26,8 @@ describe 'openstack-block-storage::scheduler' do
       expect(chef_run).to enable_service 'cinder-scheduler'
     end
 
-    it 'upgrades mysql python package' do
-      expect(chef_run).to upgrade_package 'python-mysqldb'
+    it 'upgrades mysql python3 package' do
+      expect(chef_run).to upgrade_package 'python3-mysqldb'
     end
   end
 end

spec/volume_spec.rb

@@ -38,8 +38,8 @@ describe 'openstack-block-storage::volume' do
       expect(chef_run).to enable_service 'iscsitarget'
     end
 
-    it 'upgrades mysql python packages by default' do
-      expect(chef_run).to upgrade_package 'python-mysqldb'
+    it 'upgrades mysql python3 packages by default' do
+      expect(chef_run).to upgrade_package 'python3-mysqldb'
     end
 
     it 'upgrades cinder iscsi package' do