Consider the viability of live watching host changes

[miversen33]

Consider how difficult it would be to have something listening to the hosts for either ssh or docker (or any other future providers) to ensure that when changes happen (to the containers being ran, or the underlying ssh config, etc) they are "immediately" reflected in netman. I don' t know what this looks like yet.

[miversen33]

Additionally we should consider how hard it would be to allow netman to manage its own provider hosts. This should be possible with the introduction of provider specific configurations (#135).

Configuration source is here and we are already creating configurations for consumers (such as Neo-tree). There is also some framework already in place to begin allowing providers to have their own configurations (require("netman.api").internal.get_config exists already, its just internal and thus not meant to be "exposed" yet).