provisioners/ansible: Show Ansible command when VAGRANT_LOG=debug

CHANGELOG.md

@@ -35,6 +35,8 @@ IMPROVEMENTS:
   - providers/docker: `stop_timeout` can be used to modify the `docker stop`
       timeout. [GH-4504]
   - provisioners/chef: Automatically install Chef when using a Chef provisioner.
+  - provisioners/ansible: Always show Ansible command executed when Vagrant log
+      level is debug (even if ansible.verbose is false)
   - synced\_folders/nfs: Won't use `sudo` to write to /etc/exports if there
       are write privileges. [GH-2643]
   - synced\_folders/smb: Credentials from one SMB will be copied to the rest. [GH-4675]

plugins/provisioners/ansible/provisioner.rb

@@ -66,7 +66,7 @@ module VagrantPlugins
         # Support Multiple SSH keys and SSH forwarding:
         env["ANSIBLE_SSH_ARGS"] = ansible_ssh_args unless ansible_ssh_args.empty?
 
-        show_ansible_playbook_command(env, command) if config.verbose
+        show_ansible_playbook_command(env, command) if (config.verbose || @logger.debug?)
 
         # Write stdout and stderr data, since it's the regular Ansible output
         command << {

test/unit/plugins/provisioners/ansible/provisioner_test.rb

@@ -50,6 +50,8 @@ VF
   let(:generated_inventory_file) { File.join(generated_inventory_dir, 'vagrant_ansible_inventory') }
 
   before do
+    subject.instance_variable_get(:@logger).stub(:debug?).and_return(false)
+
     machine.stub(ssh_info: ssh_info)
     machine.env.stub(active_machines: [[iso_env.machine_names[0], :dummy], [iso_env.machine_names[1], :dummy]])
 
@@ -465,6 +467,19 @@ VF
       end
     end
 
+    describe "with VAGRANT_LOG=debug, but without verbose option" do
+      before do
+        subject.instance_variable_get(:@logger).stub(:debug?).and_return(true)
+        config.verbose = false
+      end
+
+      it "shows the ansible-playbook command" do
+        expect(machine.env.ui).to receive(:detail).with { |full_command|
+          expect(full_command).to eq("ANSIBLE_FORCE_COLOR=true ANSIBLE_HOST_KEY_CHECKING=false PYTHONUNBUFFERED=1 ansible-playbook --private-key=/path/to/my/key --user=testuser --limit='machine1' --inventory-file=#{generated_inventory_dir} playbook.yml")
+        }
+      end
+    end
+
     describe "with verbose option" do
       before do
         config.verbose = 'v'