[Feature][dolphinscheduler-service] datax component global, parameter configuration

[AmriStrong]

Search before asking

• I had searched in the issues and found no similar feature requirement.

Description

There are a large number of hundreds, DATAX count tasks, which configure a large number of plaintext passwords.
New feature for problem solving:

1. When the account password address changes, a large number of DATAX tasks need to readjust the account password address, online, a waste of time.
   2, the plain text password is not secure.

Use case

The new feature has been tested through and is in normal use in production.
1、datax tested

2、Database configuration

Related issues

Very much looking forward to getting a reply

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct