Rabi Mishra f3efe1de29 Ensure _static exists with placeholder ...

openstack-tox-docs is failing with below error.

Warning, treated as error:
html_static_path entry '_static' does not exist

Change-Id: Ic6f5a463f0ec95537ebea0855ebd71d4e4ed5df4

2019-08-23 09:25:22 +05:30

..

.placeholder

Ensure _static exists with placeholder

2019-08-23 09:25:22 +05:30