PackageBuildOutputs.groovy: It would be good to mask the password in the log

[jbyibm]

For security reason we should mask the password:

@dennis-behm FYI

println("** Properties at startup:")
props.each{k,v->
        if ( k == "artifactory.password" )
            println "   $k -> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
        else
            println "   $k -> $v"
}

[dennis-behm]

delivered via #100