zuul: ensure python3-distutils is present

in-tree builds require this python package for run_npm_binary.py.

Change-Id: I880596629d098c67bed4cefba8d5efa892e65439

.zuul.yaml

diff --git a/.zuul.yaml b/.zuul.yaml
index e55f00e..9a93255 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -2,7 +2,8 @@
     name: plugins-task-build
     parent: gerrit-plugin-build
     pre-run:
-        tools/playbooks/install_docker.yaml
+        - tools/playbooks/install_docker.yaml
+        - tools/playbooks/install_python3-distutils.yaml
 
 - project:
     description: |

tools/playbooks/install_python3-distutils.yaml

diff --git a/tools/playbooks/install_python3-distutils.yaml b/tools/playbooks/install_python3-distutils.yaml
new file mode 100644
index 0000000..75f5a2a
--- /dev/null
+++ b/tools/playbooks/install_python3-distutils.yaml
@@ -0,0 +1,10 @@
+- hosts: all
+  roles:
+    - name: ensure-python
+  tasks:
+    - name: Install python3-distutils
+      become: true
+      package:
+        name:
+          - python3-distutils
+        state: present