[Clojure] client doesn't accept Content-Type */*

[mewa]

Description

When generating a Clojure client for Kubernetes (v1.8.8), generated kubernetes.core/call-api doesn't let */* content type (value, which is passed as argument in various API calls, for example createBatchV1NamespacedJob).

Swagger-codegen version

2.2.1
2.4.0-20180421.064157-234

Swagger declaration file content or url

swagger.json

Command line used for generation

java -jar swagger-codegen-cli-2.2.1.jar generate -i api.json -l clojure -o kubernetes
java -jar swagger-codegen-cli-2.4.0-20180421.064157-234.jar generate -i api.json -l clojure -o kubernetes

Steps to reproduce

1. Generate api
2. Call generated method, for example

(kubernetes.api.batch-v-/create-batch-v1-namespaced-job
   "default"
   {})

3. Observe exception:

Unhandled java.lang.IllegalArgumentException
   Content type "*/*" is not support for serialization

                  core.clj:  193  kubernetes.core/serialize
                  core.clj:  187  kubernetes.core/serialize
                  core.clj:  236  kubernetes.core/call-api
                  core.clj:  216  kubernetes.core/call-api
              batch_v_.clj:   10  kubernetes.api.batch-v-/create-batch-v1-namespaced-job-with-http-info
              batch_v_.clj:    5  kubernetes.api.batch-v-/create-batch-v1-namespaced-job-with-http-info
              batch_v_.clj:   25  kubernetes.api.batch-v-/create-batch-v1-namespaced-job
              batch_v_.clj:   20  kubernetes.api.batch-v-/create-batch-v1-namespaced-job
              batch_v_.clj:   23  kubernetes.api.batch-v-/create-batch-v1-namespaced-job
              batch_v_.clj:   20  kubernetes.api.batch-v-/create-batch-v1-namespaced-job

Related issues/PRs

There was a similar issue in the Java client

#6175
#6188

Suggest a fix/enhancement

Solution should probably reflect approach taken in Java code-gen module

I believe the problem lies in coercing */* content type into application/json.
https://gist.github.com/mewa/f302be76949026902155f14b88492502#file-kubernetes-core-clj-L172-L177
https://gist.github.com/mewa/f302be76949026902155f14b88492502#file-kubernetes-core-clj-L216-L242