Chandan Kumar b3e904e8f0 Fix tempest_image_dir default var to user's home tempest-image dir
Currently the tempest_image_dir default var points to
/opt/cache/files, basically used in openstack infra ci and the
normal user does not have permission to create it. Moving it to
ansible user home/tempest-image makes it easier to access it.

Change-Id: I62aa3eb48f779f45ff97cc5d449c7d9876752ac8
2019-03-14 10:21:14 +00:00
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