[Improvement] spark-connector support alter namespace operation.

[FANNG1]

What would you like to be improved?

we should support set namespace properties in Spark sql like:

ALTER DATABASE inventory SET DBPROPERTIES ('Edited-by' = 'John', 'Edit-date' = '01/01/2001');

the current alterNamespace interface in GravitinoCatalog.java should be implemented.

 public void alterNamespace(String[] namespace, NamespaceChange... changes)
      throws NoSuchNamespaceException {
    throw new NotSupportedException("Doesn't support altering namespace");
  }

How should we improve?

No response

[PengleiShi]

@FANNG1 i will work on this issue.

[qqqttt123]

@FANNG1 i will work on this issue.

Thanks for taking this issue. Please go ahead.