[MNG-6310] settings.xml allow proxy activation by expression

**[Brett Randall](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=brett_s_r)** opened **[MNG-6310](https://issues.apache.org/jira/browse/MNG-6310?redirect=false)** and commented

Currently it appears that `settings.xml` proxies can only be activated via a boolean `active` element, which does not appear to be evaluated, so you cannot use a property (e.g. set by a profile), nor a system or environment property.

This comes up a lot on discussions from developers trying to automate whether Maven's proxies are enabled or not, based on a system or environment property etc.

Possible solutions:
* Change the model for (generate) `Proxy.active` allowing an expression to then be evaluated.
* Copy `profiles` approach and add an `` element, but this requires a settings schema rev.

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**Affects:** 3.5.2

0 votes, 5 watchers