Fix mock file generation after build_rpm_wrapper.sh removal
Fix mock file generation after build_rpm_wrapper.sh removal

https://review.rdoproject.org/r/1029 introduced a bug when importing
code from shell into Python, because ${DATA_DIR} was used inside
Python code.

Change-Id: I6bdc0aeb8118ef444c006df44917c6d7b6d35f4d

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