Support for maven proxy tag <active>

Maven has a tag called `````` in the proxies of settings.xml

https://maven.apache.org/guides/mini/guide-proxies.html

Currently this plugin does not handle the active tag and instead throws an error that the mavenSettingsProxyId must be set.

It would be a nice improvement if it handled that tag so we didn't have to put proxy information into our pom.

In my case, I have two proxies listed with one active 'true' and one active 'false'. This is not an issue if I remove one of those proxies regardless of the active setting.