Use pip install of dib for testing

Rather than running from the checkout of the source tree, we should
also be testing the install/distribution part of the package by pip
installing.

This sets up some experimental jobs to make sure this works, with the
idea of converting the main jobs when it does.

Change-Id: I161f58d19e57cdc985d49d8490f57cae2a441732

jenkins/jobs/diskimage-builder.yaml

@@ -80,3 +80,35 @@
               keep-hierarchy: false
               copy-after-failure: false
       - console-log
+
+# this is temporary and should replace the other job when it is
+# working.
+- job-template:
+    name: 'gate-dib-dsvm-functests-{node}-pip'
+    node: '{node}'
+
+    wrappers:
+      - build-timeout:
+          timeout: 60
+      - timestamps
+
+    builders:
+      - shell: |
+          #!/bin/bash -eux
+          cd ~
+
+          /usr/zuul-env/bin/zuul-cloner --cache-dir /opt/git \
+            git://git.openstack.org \
+            openstack/diskimage-builder \
+            openstack/dib-utils
+
+          virtualenv env
+
+          ./env/bin/pip install $(pwd)/openstack/dib-utils
+          ./env/bin/pip install $(pwd)/openstack/diskimage-builder
+
+          ./openstack/diskimage-builder/tests/install_test_deps.sh
+          ./openstack/diskimage-builder/tests/run_functests.sh
+
+    publishers:
+      - console-log

jenkins/jobs/projects.yaml

@@ -1200,6 +1200,10 @@
           node: devstack-trusty
           job-suffix: '-dib'
           branch-override: default
+      - gate-dib-dsvm-functests-{node}-pip:
+          node: devstack-trusty
+      - gate-dib-dsvm-functests-{node}-pip:
+          node: devstack-centos7
 
 - project:
     name: distil

zuul/layout.yaml

@@ -4731,6 +4731,9 @@ projects:
     post:
       - dib-utils-branch-tarball
       - dib-buildimage-debian-ironic
+    experimental:
+      - gate-dib-dsvm-functests-devstack-trusty-pip
+      - gate-dib-dsvm-functests-devstack-centos7-pip
 
   - name: openstack/diskimage-builder
     template: