AMBARI-26236: The database password character type requirement is too few

[guluo2016]

What changes were proposed in this pull request?

The database password character type requirement is too few.
It is recommended to support more character sets, For example: !#$%@.

When the database password we set contains some special characters，we can still setup ambari-server succefully after applying this changes.

How was this patch tested?

1. Applying this changes
2. Set the database password used by Ambari to contain special characters (eg a-zA-Z0-9!#$%@_-)
3. Setup ambari-server

Please review Ambari Contributing Guide before opening a pull request.

[JiaLiangC]

Can we include more special strings, like other systems, and it would be best to add some tests as well?

[guluo2016]

OK, I'll add the test cases later. Thank you for your review!

[guluo2016]

Add support for these characters a-zA-Z0-9!#$%@^&=+[]{}()<>.*?;:'"_-