(maint) Explicitly specify Docker VOLUMEs
(maint) Explicitly specify Docker VOLUMEs

 - Based on the container configuration, there are 3 separate locations
   where persistent data is located, so explicitly specify those:

   * generated certs (when puppetserver is connected)
   * puppetdb data
   * log files

 - This data will be updated to consume only a single VOLUME in a future
   commit to make VOLUME management simpler and align around the same
   configuration as PE

puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb