Pin ecommerce worker for devstack

vagrant/base/devstack/Vagrantfile

@@ -79,6 +79,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
         xqueue_version: ENV['OPENEDX_RELEASE'],
         NOTIFIER_VERSION: ENV['OPENEDX_RELEASE'],
         ECOMMERCE_VERSION: ENV['OPENEDX_RELEASE'],
+        ECOMMERCE_WORKER_VERSION: ENV['OPENEDX_RELEASE'],
         PROGRAMS_VERSION: ENV['OPENEDX_RELEASE'],
       }
     end
@@ -91,6 +92,9 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     if ENV['ECOMMERCE_VERSION']
       ansible.extra_vars['ECOMMERCE_VERSION'] = ENV['ECOMMERCE_VERSION']
     end
+    if ENV['ECOMMERCE_WORKER_VERSION']
+      ansible.extra_vars['ECOMMERCE_WORKER_VERSION'] = ENV['ECOMMERCE_WORKER_VERSION']
+    end
     if ENV['PROGRAMS_VERSION']
       ansible.extra_vars['PROGRAMS_VERSION'] = ENV['PROGRAMS_VERSION']
     end

vagrant/release/devstack/Vagrantfile

@@ -26,6 +26,7 @@ if [ -n "$OPENEDX_RELEASE" ]; then
     -e xqueue_version=$OPENEDX_RELEASE \
     -e NOTIFIER_VERSION=$OPENEDX_RELEASE \
     -e ECOMMERCE_VERSION=$OPENEDX_RELEASE \
+    -e ECOMMERCE_WORKER_VERSION=$OPENEDX_RELEASE \
     -e PROGRAMS_VERSION=$OPENEDX_RELEASE \
   "
   CONFIG_VER=$OPENEDX_RELEASE