Include Locale property in the HTTP Header of REST call

A customer is unable to create project using rest api as below after adding the files messages.properties and post-commit provided

curl -v -k -H 'accept: application/json' -H 'Content-Type: application/json' -u rhpamAdmin:admin@123 -X POST -i http://localhost:8080/business-central/rest/spaces/MySpace/projects -d '

{"name":"testProj", "description": "A Test Project", "groupId": "com.redhat.cee.example","version":"1.0-SNAPSHOT" }

'