Fix repo_bootstrap macro passing to mock
Fix repo_bootstrap macro passing to mock

The current code was passing the variable with a double quote, which
was not generating the expected outcome.

Change-Id: I146bf01a1ee3acc3ed558d63233767741ebb12ae

openstack-packages/DLRN,openstack-packages/delorean,openstack-packages/delorean,openstack-packages/DLRN