[BUG] Maven plugin: skipValidateSpec option

Created by: adigerber

Description

• skipValidateSpec affects the wrong option - skipOverwrite.
• Why even have skipValidateSpec if there's already validateSpec which supposedly does the same thing?

openapi-generator version

Master branch - 9c7d4073

Suggest a fix

Remove skipValidateSpec completely in favor of validateSpec, or change it to call setValidateSpec instead of setSkipOverwrite.