Make whole pylxca code in accordance with PEP8 style guide by using pylint

[walteraa]

When running Pylint, for example, in the file pylxca/lxca_cmd.py, I got the following report summary:

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Your code has been rated at -1.95/10

It occurs because some style recommendations aren't followed, for example:

I changed the class name in line 285 from fans to Fan and I ran the pylint again, getting the following report:

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Your code has been rated at -1.82/10 (previous run: -1.95/10, +0.13)

Increasing 0.13% the code quality. It happened because class name should have the first line in upper case and shouldn't be in plural, only collections should be plural, even it referring to a class which has a list command, which the recommendation is use something like that:

pylxca fan list or pylxca fan get ID