Fix Artifactory Plugin to consider plugin proxy bypass setting in global configuration

[phillipwbc]

Hi team,

Just raising an issue/feature request to fix the proxy bypass setting for pipelines when a new server instance in the Jenkins pipeline is created. Currently it defaults to using the Jenkins Plugins Proxy Configuration if one is specified and requires users to add in their pipeline: server.bypassProxy = true

The issue with this is that we have identified over 600 instances of pipelines that have configured to use the Artifactory plugin this way, and getting this change in may be unfeasible. This issue has also been raised in the JFrog support portal (ticket number #274546).

Let me know if you require further info.

Cheers,
Phil