Feature Request: Better error messages

[markfaine]

Dell-EMC-Ansible-Modules-for-iDRAC/utils/dellemc_idrac.py

Line 73 in 9fdeb23

if idrac is None:

It looks like to me, and I'm no expert that this can just be a failure to authenticate? The error message is misleading, or actually meaningless, at least to me. I would guess from the error message that the IDRAC version is not supported though any failure here that would result in idrac being none will produce the same error message.