add brief design doc for alps_submitter (#246)
add brief design doc for alps_submitter (#246)

* add brief design doc for alps_submitter

* update alps_submitter design document

* update

sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow,sql-machine-learning/sqlflow