Add parameters for controlling the docker container settings used to
create the manila-share pacemaker bundle. The parameters eliminate the
need to hard-code the list of docker volumes and environment variables,
making it possible to control the values using hiera data.
For backward compatibility, the previous hard-coded values are used
when no parameter inputs are supplied.
Partial-Bug: #1749752
Change-Id: Ia81602f8a3454fcb0be2eaa9126021331d37b147
a33f0c1f21