`wp option` - new autoload values in autoload filter

[imrraaj]

• Replaces the old values of autoload filter to new ones when passing via flag in the wp option list command
• Checks for the autoload values of on and off instead of old values yes and no.
• Fixes: #509

[swissspidy]

Hi there and thanks for your contribution!

As per the reported issue, we should search for both values, old and new, not just the new ones.

Also, would it be possible to add tests for this change?