We often specific the project name after "{{ node_config_directory }}",
for example,
``{{ node_config_directory }}/cinder-api/:{{ container_config_directory }}/:ro``.
As the "{{ project }}" option is not configured, This line was
generated with:
``/etc/kolla//cinder-api/:...``
There would be double slash exists. It's OK, but confusing.
Change-Id: I82e6a91b2c541e38cf8e97896842149b31244688
Closes-Bug: #1838259
a1ab06d244