Add base role integration jobs

These are jobs for the roles in this repo which are currently
tested by the "base-integration" job in openstack-zuul-jobs.
Move it into this repo and rename it "base-roles".

Change-Id: Ibd07964a08120e033bc5a2deca18649bd0e74a48

test-playbooks/base-roles/ensure-output-dirs.yaml

@@ -0,0 +1,32 @@
+- name: Test the ensure-output-dirs role
+  hosts: all
+  roles:
+    - role: ensure-output-dirs
+  post_tasks:
+    - name: Check that log dir has been created
+      file:
+        path: "{{ zuul_output_dir }}/logs"
+        state: directory
+      register: log_directory
+
+    - name: Check that artifact dir has been created
+      file:
+        path: "{{ zuul_output_dir }}/artifacts"
+        state: directory
+      register: artifact_directory
+
+    - name: Check that doc dir has been created
+      file:
+        path: "{{ zuul_output_dir }}/docs"
+        state: directory
+      register: doc_directory
+
+    - name: Validate that directories were set correctly
+      assert:
+        that:
+          - log_directory is not changed
+          - log_directory is succeeded
+          - artifact_directory is not changed
+          - artifact_directory is succeeded
+          - doc_directory is not changed
+          - doc_directory is succeeded