Add a new package for parsing and interacting with ceph version
information. Previously ceph versions were limited to the release name,
and this patch supports ceph versions parts X.Y.Z for more fine grained
behavior.
The main structure introduced here in CephVersion which contains the
version parts. This will be used in the next patch to replace the Name
string component of the cluster CRD spec which was populated at runtime.
Signed-off-by: Noah Watkins <noahwatkins@gmail.com>