There are hardcoded references to the 'ceph' package in the module but
the package isn't provided by the ceph.com repos anymore. This change
fixes the dependencies by referring them to ::ceph::params::packages instead
It also changes the type of the packages parameter to an array so that
multiple packages can be passed.
Change-Id: I13462219522386f8740b0d70916a44f3474115e4
Closes-Bug: 1630468