Parameterized URLs in RestConnector

[andrus]

LM bundled URIConnector and the first version of RestConnector (#39) only allow working with static URLs. JAX-RS WebTarget on the other hand supports URL parameters, that can be substituted via various resolveTemplate methods. So let's take advantage of that and implement binding of extractor execution parameters to connector URL template.

Here is the API we are going to provide:

jerseyclient:
  targets:
    toextract:
      url: "http://127.0.0.1:8080/r1/{p1}?name={p2}"

LmTask task = ..
 Map<String, Object> params = RestConnector.bindTemplateValues()
                    .value("p1", 897L)
                    .value("p2", "a_Name")
                    .toExtractorParameters();
task.run(params);