Allow users to provide additional projected volumes to be mounted into
the various deployments, statefulsets, and jobs that the cinder chart has
in the /etc/cinder/cinder.conf.d/ path. This allows for users to provide
service account or database secrets via different operators as well as
provide ways to use the chart to define common deployments while being
able to have site specific overrides.
Change-Id: Ibc35e4df73879ab3b48d4b0640c0b7b426175a77
Signed-off-by: Mathieu Gagné <mgagne@calavera.ca>