[Modules] New options for source-sh modulefile command

[Xavier D. <xav...@gm...>]

Dear All,

New options for `source-sh` modulefile command are introduced for next
Modules version (5.4):

* `bash-eval` shell mode to get environment changes from script output.
* `--ignore` option to skip some kind of environment changes.

See details and examples at:
https://modules.readthedocs.io/en/latest/MIGRATING.html#new-options-for-source-sh-modulefile-command

Regards,
Xavier