The zuul cloner needs the ZUUL_* env vars when setting up projects
for the new apply integration test.
Also, add some more debugging to both versions of the test.
Change-Id: I486b19cecd034250068e4a59604e1e0ca90ed83d
Make module installation conditional in install_modules.sh so that
we can specify that we _do not_ want it to install the modules
that will be participating in the integration test.
Add a variant of the apply test script (currently test.sh) that
uses zuul-cloner to check out the appropriate versions of modules
that are participating in the integration test.
Add jobs that run this to the experimental pipeline.
Change-Id: I16055cdd45f6e05aa8ebceb500c5709f265268df
