Cleanup references to Che in devfile stack authors guide

[metacosm]

Environment variables that are injected by default are all prefixed by the CHE_ prefix and several (most?) of them don't make sense outside of a Che context. Default environment variables should be audited and renamed to something more Che-independent.

[metacosm]

See in particular #17 (comment) for an example.

[l0rd]

Sure @metacosm but there is no mention of the CHE_ env variables in the spec. The example in the issue that you have linked is about the v1.

[metacosm]

Sure but the guide to stack authors, which unless I'm mistaken, targets devfile 2.0 is clearly riddled with Che-related references and environment variables: https://devfile.github.io/website/devfile/assembly_making-a-workspace-portable-using-a-devfile.html#_mounting_project_sources or https://devfile.github.io/website/devfile/assembly_making-a-workspace-portable-using-a-devfile.html#_environment_variables. Also, the spec surely cannot be reduced to a schema as it's also supposed to define behavior (such as presence of default environment variables).

[l0rd]

@metacosm ok now I get it. Thanks for reporting this. cc @elsony

[jc-berger]

Closing as the PR addressing these concerns have been merged.