This patch will copy logs from nova servers to local environment
on test failures.
Don't delete bays until teardown so log gathering will work.
Give functional test types a common base.
Added timeout to docker ps; else, the command would time out,
failing to run the rest of the tests.
Closes-Bug: 1542390
Change-Id: I016ed8fe311bede407f57b7982126c4b77749bec
Co-Authored-By: Corey O'Brien <coreypobrien@gmail.com>