Switch to built-in venv

Python provides the built-in venv functionality which can replace
virtualenv since Python 3.3 .

Depends-on: https://review.opendev.org/934007
Change-Id: I201684c953e30f6e148573ee0340e1807518de70

manifests/init.pp

@@ -581,20 +581,6 @@ class tempest(
     ensure_packages(['git'])
     ensure_packages($tempest::params::dev_packages)
 
-    if $::tempest::params::pip_package_name {
-      ensure_packages('pip', {
-        name => $::tempest::params::pip_package_name,
-      })
-      Package['pip'] -> Package['tox']
-    } else {
-      warning('pip package is not available in this distribution.')
-    }
-
-    package { 'tox':
-      ensure   => present,
-      provider => 'pip',
-    }
-
     if $git_clone {
       vcsrepo { $tempest_clone_path:
         ensure   => 'present',
@@ -608,13 +594,11 @@ class tempest(
     }
 
     if $setup_venv {
-      # virtualenv will be installed along with tox
       exec { 'create-venv':
-        command => ['virtualenv', '-p', 'python3', "${tempest_clone_path}/.venv"],
+        command => ['python3', '-m', 'venv', "${tempest_clone_path}/.venv"],
         creates => "${tempest_clone_path}/.venv",
         path    => ['/bin', '/usr/bin', '/usr/local/bin'],
         require => [
-          Package['tox'],
           Package[$tempest::params::dev_packages],
         ],
       }

manifests/params.pp

@@ -33,10 +33,6 @@ class tempest::params {
       $python_barbican_tests   = 'python3-barbican-tests-tempest'
       $python_manila_tests     = 'python3-manila-tests-tempest'
       $package_name            = 'openstack-tempest'
-      $pip_package_name        = $facts['os']['name'] ? {
-        'RedHat' => undef,
-        default  => 'python3-pip'
-      }
     }
     'Debian': {
       $dev_packages = [
@@ -46,8 +42,7 @@ class tempest::params {
         'libssl-dev',
         'libffi-dev',
         'patch',
-        'gcc',
-        'python3-virtualenv',
+        'gcc'
       ]
       $python_telemetry_tests  = 'telemetry-tempest-plugin'
       $python_cinder_tests     = 'cinder-tempest-plugin'
@@ -68,7 +63,6 @@ class tempest::params {
       $python_barbican_tests   = 'barbican-tempest-plugin'
       $python_manila_tests     = 'manila-tempest-plugin'
       $package_name            = 'tempest'
-      $pip_package_name        = 'python3-pip'
     }
     default: {
       fail("Unsupported osfamily: ${facts['os']['family']}")

spec/classes/tempest_init_spec.rb

@@ -176,17 +176,6 @@ describe 'tempest' do
 
           is_expected.to contain_class('tempest::params')
 
-          if platform_params[:pip_package_name]
-            is_expected.to contain_package('pip').with(
-              :name => platform_params[:pip_package_name],
-            )
-          end
-
-          is_expected.to contain_package('tox').with(
-            :ensure   => 'present',
-            :provider => 'pip',
-          )
-
           is_expected.to contain_vcsrepo('/var/lib/tempest').with(
             :ensure   => 'present',
             :source   => 'https://opendev.org/openstack/tempest',
@@ -400,7 +389,7 @@ describe 'tempest' do
 
         it 'sets up virtualenv for tempest' do
           is_expected.to contain_exec('create-venv').with(
-            :command => ['virtualenv', '-p', 'python3', '/var/lib/tempest/.venv'],
+            :command => ['python3', '-m', 'venv', '/var/lib/tempest/.venv'],
             :creates => '/var/lib/tempest/.venv',
             :path    => ['/bin', '/usr/bin', '/usr/local/bin']
           )
@@ -409,7 +398,7 @@ describe 'tempest' do
         it 'installs tempest into the virtualenv' do
           is_expected.to contain_exec('install-tempest').with(
             :command     => [
-              'virtualenv', '-p', 'python3', '/var/lib/tempest/.venv'
+              'pytho3', '-m' 'venv', '/var/lib/tempest/.venv'
             ],
             :command     => [
               "/var/lib/tempest/.venv/bin/#{platform_params[:pip_command]}", 'install',
@@ -583,11 +572,9 @@ describe 'tempest' do
                                        'libssl-dev',
                                        'libffi-dev',
                                        'patch',
-                                       'gcc',
-                                       'python3-virtualenv'],
+                                       'gcc'],
             :package_name          => 'tempest',
             :pip_command           => 'pip3',
-            :pip_package_name      => 'python3-pip',
             :python_heat_tests     => 'heat-tempest-plugin',
             :python_keystone_tests => 'keystone-tempest-plugin',
             :python_neutron_tests  => 'neutron-tempest-plugin',
@@ -602,7 +589,6 @@ describe 'tempest' do
                                        'gcc'],
             :package_name          => 'openstack-tempest',
             :pip_command           => 'pip3',
-            :pip_package_name      => 'python3-pip',
             :python_heat_tests     => 'python3-heat-tests-tempest',
             :python_keystone_tests => 'python3-keystone-tests-tempest',
             :python_neutron_tests  => 'python3-neutron-tests-tempest',