[MWRAPPER-109] mvnw needs some feature to support different URLs to download mvn from

**[Tamas Cservenak](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=cstamas)** opened **[MWRAPPER-109](https://issues.apache.org/jira/browse/MWRAPPER-109?redirect=false)** and commented

Just like a Maven project, that may be built "standalone", but also may be redirected to some MRM (in some sealed environment, no internet just MRM accessible, using settings.xml), so basically a project can be made build-able in both but when mvnw used, this is not possible as it sticks to only one distributionUrl.

As wrapper.properties either point to this or that. And in example above, it is either central accessible but not the MRM, or central is not accessibly only the MRM.

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No further details from [MWRAPPER-109](https://issues.apache.org/jira/browse/MWRAPPER-109?redirect=false)