Wrong value of "Content-Type" header in the inbound request, which contains multipart body, may cause a failure.

It seems that the implementation does not properly handle wrong value of Content-Type header during processing multipart requests.
This bug can be reproduced if the request contains a Content-Type header set to */*.

I have a resource method like the following:

```
**Resource.java**@Path("/resources")
public class Resources {
...
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.APPLICATION_JSON)
public Response createResource(MultiPart multiPart) {
...
}
}
```

The following cURL command results in "500 Internal Server Error"

```
**cURL POST**curl -X POST -H Content-Type: text/plain" -H ""Accept: application/json" http://host:port/resources
```
```
**Server Log**java.lang.IllegalArgumentException: */*
at org.glassfish.jersey.media.multipart.MultiPart.setMediaType(MultiPart.java:122)
at org.glassfish.jersey.media.multipart.internal.MultiPartReaderClientSide.readMultiPart(MultiPartReaderClientSide.java:222)
at org.glassfish.jersey.media.multipart.internal.MultiPartReaderServerSide.readMultiPart(MultiPartReaderServerSide.java:91)
at org.glassfish.jersey.media.multipart.internal.MultiPartReaderClientSide.readFrom(MultiPartReaderClientSide.java:183)
at org.glassfish.jersey.media.multipart.internal.MultiPartReaderClientSide.readFrom(MultiPartReaderClientSide.java:93)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:256)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:235)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155)
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundReadFrom(MappableExceptionWrapperInterceptor.java:74)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155)
at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1085)
at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:852)
at org.glassfish.jersey.server.ContainerRequest.readEntity(ContainerRequest.java:270)
at org.glassfish.jersey.server.internal.inject.EntityParamValueFactoryProvider$EntityValueFactory.provide(EntityParamValueFactoryProvider.java:96)
at org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource.provide(ParamValueFactoryWithSource.java:71)
at org.glassfish.jersey.server.spi.internal.ParameterValueHelper.getParameterValues(ParameterValueHelper.java:93)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$AbstractMethodParamInvoker.getParamValues(JavaResourceMethodDispatche
rProvider.java:127)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.ja
va:160)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:309)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:292)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:460)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:386)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:334)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
```

I think the server response should be "415 Unsupported Media Type".
#### Affected Versions
[2.21]