Changes to Add field to user owned project

the request property oneOf[subschema #3]/iteration_configuration/duration became required

the request property oneOf[subschema #3]/iteration_configuration/iterations/items/duration became required

the request property oneOf[subschema #3]/iteration_configuration/iterations/items/start_date became required

the request property oneOf[subschema #3]/iteration_configuration/iterations/items/title became required

the request property oneOf[subschema #3]/iteration_configuration/start_date became required

added the optional property issue_field_id to the response with the 201 status