* A new boolean value controls whether secrets and
the ceph.conf secret ConfigMaps are installed allowing
you to bring-your-own ceph configs. This should
remove the dependency on having to generate secrets
using the common chart if you have installed your own.
* A new boolean value controls whether we install
a storage class as part of the ceph chart install allowing
you to externally manage this
* More of the ceph values have been converted to values
variables, paving the way for a master yaml to provide input
and overrides to many independent "sub" charts without a parent chart