### What is this PR for?
Simple PR to only apply dynamic forms for LivySqlInterpreter, this make the behavior consistent with zeppelin's built-in spark interpreter.
### What type of PR is it?
[Bug Fix]
### Todos
* [ ] - Task
### What is the Jira issue?
* https://issues.apache.org/jira/browse/ZEPPELIN-3034
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: Jeff Zhang <zjffdu@apache.org>
Closes#2651 from zjffdu/ZEPPELIN-3034 and squashes the following commits:
39eff37 [Jeff Zhang] ZEPPELIN-3034. Only apply dynamic form for LivySqlnterpreter