chore: Removes condition for extracting no_proxy juju model config

[saltiyazan]

Description

@shipperizer requested to remove this condition as sometimes on http proxy is not needed, only https. Added some logs too to ensure the command gets the env vars.

Checklist:

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that validate the behaviour of the software
• [ ] I validated that new and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules
• [ ] I Have bumped the version of the library

[shipperizer]

changes are needed to get more visibility of the "shell" context in which the command is executed

regarding the dropping of the and condition on the setting of no_proxy that is meant avoid hiddent conditions where one of http or https proxy vars are not set and we want proxying only for one of the protocols