[AG-44] Support SBT version inside artifact names

[felipead]

We have a few cases where the SBT version is also appended to the artifact names, just after the Scala version.

Here's an example:

http://central.maven.org/maven2/com/julianpeeters/sbt-avrohugger_2.10_0.13/0.16.0/sbt-avrohugger-0.16.0.pom

Also notice that the Scala and SBT versions are only present in the path, but not in the POM file name.

This is also very common for JFrog hosted Maven repositories -- https://dl.bintray.com/bintray/jcenter