fix templates

Author: kmclarnon

.blazar.yaml

@@ -0,0 +1,2 @@
+env:
+  SET_VERSION_OVERRIDE: "2.4.19-$GIT_BRANCH-SNAPSHOT"

modules/swagger-codegen/src/main/resources/Java/libraries/okhttp-gson/ApiClient.mustache

@@ -769,6 +769,8 @@ public class ApiClient {
                 content = null;
             }
             return RequestBody.create(MediaType.parse(contentType), content);
+        } else if (obj instanceof String) {
+            return RequestBody.create(MediaType.parse(contentType), (String) obj);
         } else {
             throw new ApiException("Content type \"" + contentType + "\" is not supported");
         }