Changes to Resize an exec instance

removed the success response with the status 204

api tag Exec added

added the non-success response with the status 400

added the non-success response with the status 404

added the non-success response with the status 500

added the success response with the status 200

for the query request parameter h, the format changed from no format to int32

for the query request parameter w, the format changed from no format to int32

removed the success response with the status 200

api tag Exec removed

removed the non-success response with the status 400

removed the non-success response with the status 404

removed the non-success response with the status 500

added the success response with the status 204

added the media type application/json for the response with the status 400

added the media type application/json for the response with the status 404

added the media type application/json for the response with the status 500