In web-download import method functional tests we are trying to download
a file from 'https://www.openstack.org/assets/openstack-logo/2016R/OpenStack-Logo-Horizontal.eps.zip'.
Here we are assuming image is downloaded and will be active within 20
seconds else will be marked as failed. As of now these tests never
fails in local environment but, external networking will always be unreliable
from the CI environment which sometimes causes these tests to either
timeout or failure.
Instead of using external URL to download the image, deploying local http
server to dowload local image.
Closes-Bug: #1797571
Change-Id: I781666327f092ad439c23eca57128b8fd0334c89