By default Jersey configures Jackson to use both Jackson annotations
and JAXB annotations when introspective types for (de)serialization.
However, the changes made in 5776d6a8 mean that Jersey no longer uses
its default ObjectMapper configuration and uses the auto-configured
ObjectMapper instead. This had the unwanted side-effect of leaving
Jersey with an ObjectMapper that only uses Jackson annotations and
ignores JAXB annotations.

This commit updates JerseyAutoConfiguration so that it will add the
JaxbAnnotationIntrospector to the auto-configured ObjectMapper for
both serialization and deserialization. It uses
AnnotationIntrospectorPair to ensure retain any existing
introspectors.

Closes gh-6310

Closes gh-6197

Closes gh-6249

Closes gh-6315

Fixes gh-6312

Closes gh-5670

See gh-5670

Add MVC only endpoint to obtain GZip compressed heap dump files.

See gh-5670

Extract common functionality from Spring MVC only endpoints.

See gh-5670

Closes gh-6303

Closes gh-6302

Closes gh-6301

Closes gh-6300

closes gh-6298

Closes gh-6297

Closes gh-6296

Closes gh-6295

Closes gh-6293

Closes gh-6292

Closes gh-6291

Closes gh-6290

Closes gh-6289

Closes gh-6288

Closes gh-6287

Closes gh-6286

Closes gh-6285

Closes gh-6284

Closes gh-6283

Closes gh-6282

Closes gh-6281

Closes gh-6280

Closes gh-6279

Closes gh-6278

Closes gh-6277

* pr/6304:
  Remove duplicate property reference