The default (implied) behavior for all environments, as of ea1de6b,
is that an environment will maintain a view in a location of its
choosing. ea1de6b explicitly recorded all three possible states of
maintaining a view:
1. Maintain a view, and let the environment decide where to put it
(default)
2. Maintain a view, and let the user decide
3. Don't maintain a view
This commit updates the config writer so that for case [1], nothing
will be written to the config.yaml. This will not change any existing
behavior, it just serves to keep the config more compact.
ef8b5c73ce