Bug Fixes

This fixes the bug where credhub would always use the default exodus
mount point, even if a different one was specified in the environment
file as part of the vault specification.

Improvements

The genesis environments command now has a -d or --details flag that
will show the detailed information that was shown for each environment
in the previous version of Genesis. (This is also available as -v for
compatibility with the concept of "verbosity".)

Now by default, it will just list the environments and deployment
types known to the Genesis system, which is much faster and more
often what is needed.
- Added a new option --json to the genesis environments command to output the environments in JSON format.