Allow overriding CPU Map

[coldeasy]

• Support to entirely disable CPU pinning or have a custom form

[jcmoraisjr]

Hi, thanks for supporting this controller! Extra bonus for the docs and the tests.

Following a few remarks:

• Use a single section ## cpu-map declaring both keys. There are some examples out there.
• Add both keys in the Configuration Keys table in alphabetical order
• Use alphabetical order everywhere - doc, defaults, declaration.
• If possible squash and force push the resulting changes into a single commit

[coldeasy]

Thanks for the quick feedback @jcmoraisjr - updated based on your comments and rebased off master.

[jcmoraisjr]

Thanks! Merging.