Transforming LocalRepoFinder and QbtRemote classes.

These classes allow the user to map a repo to a different name locally on disk
and on the server, allowing those places to use names which contain otherwise
invalid characters for repo names.

Resolves #5 and mitigates #4.

QbtConfig might look like this:

Function<String, String> transformNames = new Function<String, String>() {
    public String apply(String name) {
        return name.replace("flume_ng", "flume-ng").replace("hadoop_lzo", "hadoop-lzo");
    }
}

return new QbtConfig(
    new TransformingFormatLocalRepoFinder(gitLocalVcs, transformNames, workspaceRoot.toString()),
    // ...
    new MapQbtRemoteFinder([
        formatremote: new TransformingFormatQbtRemote(
            gitRemoteVcs,
            transformNames,
            "ssh://git@github.mtv.cloudera.com/TerabyteQbt/%r.git",
        ),
        githubremote: new TransformingGithubQbtRemote(
            gitRemoteVcs,
            transformNames,
            githubToken,
            "TerabyteQbt",
            "%r",
        ),
    ]),
    // ...
);

qbt-manifest

@@ -2206,7 +2206,7 @@
                 }
             }
         },
-        "version": "6b09307ffd7af1eb7810d595108de34e502e512c"
+        "version": "3be9efbdbdbc4d851cbf05e7b92f1295cdf08952"
     },
     "wrapper_generator": {
         "packages": {