This enables the test and limits it to look only for the header and footers
in the message, since the url pattern does not currently function the same as
it did in v2.
Change-Id: I0ae95c4f7755011e5d9f73879867a06df8d0d223
Story: 2000773
Task: 3472
Currently there is no way to add extra information to the end of a
report sent back by zuul. This adds a 'footer-message' field to the
pipelines allowing operators to leave extra information at the end
of a build result.
This is useful for leaving CI contact and debugging information.
Change-Id: Ieae62e845915fa3997353b6b425e215966a9338c