Add zuul_work_dir default to one-project roles

We'd like to be able to make some jobs that run tox on other projects
for ease of testing. This should allow us to do that.

Change-Id: I774a76eaaea16d8ea218b439a099b5c9335c2fc5

roles/bindep/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/bindep/tasks/main.yaml

@@ -1,7 +1,7 @@
 ---
 - name: Install distro packages from bindep
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
     executable: /bin/bash
   shell: |
     # set a default path to the preinstalled bindep entrypoint

roles/fetch-sphinx-output/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/fetch-sphinx-output/tasks/main.yaml

@@ -2,5 +2,5 @@
   synchronize:
     dest: "{{ zuul.executor.log_root }}"
     mode: pull
-    src: "src/{{ zuul.project.canonical_name }}/doc/build/html"
+    src: "{{ zuul_work_dir }}/doc/build/html"
   no_log: true

roles/run-bindep/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/run-cover/defaults/main.yaml

@@ -1,2 +1,3 @@
 ---
 tox_environment: cover
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/run-cover/tasks/main.yaml

@@ -1,6 +1,6 @@
 - name: Run code coverage
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
   shell: |
     #!/bin/bash -xe
 

roles/run-tarball/defaults/main.yaml

@@ -1,2 +1,3 @@
 ---
 tox_environment: venv
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/run-tarball/tasks/main.yaml

@@ -1,6 +1,6 @@
 - name: Build a tarball
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
   shell: |
     #!/bin/bash -xe
 

roles/run-wheel/defaults/main.yaml

@@ -1,2 +1,3 @@
 ---
 tox_environment: venv
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/run-wheel/tasks/main.yaml

@@ -1,6 +1,6 @@
 - name: Build a wheel
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
   shell: |
     #!/bin/bash -xe
 

roles/test-setup/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/test-setup/tasks/main.yaml

@@ -1,12 +1,12 @@
 - name: Check if project's tools/test-setup.sh exists
   stat:
-    path: "src/{{ zuul.project.canonical_name }}/tools/test-setup.sh"
+    path: "{{ zuul_work_dir }}/tools/test-setup.sh"
   register: p
 
 - name: Run tools/test-setup.sh
   shell: tools/test-setup.sh
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
   when:
     - p.stat.exists
     - p.stat.executable

roles/tox/defaults/main.yaml

@@ -1,2 +1,3 @@
 ---
 tox_environment: venv
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/tox/tasks/main.yaml

@@ -1,6 +1,6 @@
 - name: Run tox
   args:
-    chdir: "src/{{ zuul.project.canonical_name }}"
+    chdir: "{{ zuul_work_dir }}"
     executable: /bin/bash
   shell: |
     # If a bundle file is present, call tox with the jenkins version of