[KYUUBI-SHADED #8] Use Curator 2.12 w/ Zookeeper 3.4

### _Why are the changes needed?_

### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [ ] Add screenshots for manual tests if appropriate

- [ ] [Run test](https://kyuubi.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #8 from pan3793/curator-2.12.

1e5c9cd [Cheng Pan] curator 2.12 w/ zookeeper 3.4

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>
diff --git a/kyuubi-shaded-zookeeper-parent/kyuubi-shaded-zookeeper-34/pom.xml b/kyuubi-shaded-zookeeper-parent/kyuubi-shaded-zookeeper-34/pom.xml
index c6b8e1d..3afbcb0 100644
--- a/kyuubi-shaded-zookeeper-parent/kyuubi-shaded-zookeeper-34/pom.xml
+++ b/kyuubi-shaded-zookeeper-parent/kyuubi-shaded-zookeeper-34/pom.xml
@@ -32,7 +32,7 @@
 
     <properties>
         <zookeeper.version>3.4.14</zookeeper.version>
-        <curator.version>4.2.0</curator.version>
+        <curator.version>2.12.0</curator.version>
         <slf4j.version>1.7.25</slf4j.version>
         <yetus.version>0.5.0</yetus.version>
     </properties>