[NPANDAY-480] additional role content in Azure project

Some Azure project templates include files to overwrite or supplement what
is included in the originally packaged role (for example,
diagnostics.wadcfg). Copy that into the package preparation area as part of
the build.

git-svn-id: https://svn.apache.org/repos/asf/incubator/npanday/trunk@1513353 13f79535-47bb-0310-9956-ffa450edef68