[KYUUBI #6457] Strip dependencies from REST client

# 🔍 Description

This PR removes two dependencies from the `kyuubi-rest-client` module
- `commons-collections` - has CVE Cx78f40514-81ff and is only used in one place, just rewrite to remove the dependency
- `javax.servlet-api` - only used for UT, correct the scope from `compile` to `test`

## Types of changes 🔖

- [ ] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Test Plan 🧪

Pass GHA

---

# Checklist 📝

- [x] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)

**Be nice. Be informative.**

Closes #6457 from pan3793/rest-client-dep.

Closes #6457

c24af70ac [Cheng Pan] dep list
80969d0d3 [Cheng Pan] nit
950d4b730 [Cheng Pan] fix
169281903 [Cheng Pan] fix import
c068ba10f [Cheng Pan] nit
d46653d53 [Cheng Pan] fix
ca7831732 [Cheng Pan] Strip dependencies from REST client

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>
(cherry picked from commit f7e8d69ac0)
Signed-off-by: Cheng Pan <chengpan@apache.org>

dev/dependencyList

@@ -29,7 +29,6 @@ arrow-vector/12.0.0//arrow-vector-12.0.0.jar
 checker-qual/3.42.0//checker-qual-3.42.0.jar
 classgraph/4.8.138//classgraph-4.8.138.jar
 commons-codec/1.15//commons-codec-1.15.jar
-commons-collections/3.2.2//commons-collections-3.2.2.jar
 commons-lang3/3.13.0//commons-lang3-3.13.0.jar
 commons-logging/1.1.3//commons-logging-1.1.3.jar
 error_prone_annotations/2.20.0//error_prone_annotations-2.20.0.jar

kyuubi-rest-client/pom.xml

@@ -39,16 +39,6 @@
             <artifactId>jackson-databind</artifactId>
         </dependency>
 
-        <dependency>
-            <groupId>commons-collections</groupId>
-            <artifactId>commons-collections</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>javax.servlet-api</artifactId>
-        </dependency>
-
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
@@ -122,6 +112,12 @@
             <artifactId>jetty-servlet</artifactId>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

kyuubi-rest-client/src/main/java/org/apache/kyuubi/client/RestClient.java

@@ -24,7 +24,6 @@ import java.net.URISyntaxException;
 import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
 import java.util.Map;
-import org.apache.commons.collections.MapUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpHeaders;
@@ -207,7 +206,7 @@ public class RestClient implements IRestClient {
       String url = StringUtils.isNotBlank(path) ? this.baseUrl + "/" + path : this.baseUrl;
       URIBuilder builder = new URIBuilder(url);
 
-      if (MapUtils.isNotEmpty(params)) {
+      if (params != null) {
         for (Map.Entry<String, Object> entry : params.entrySet()) {
           if (entry.getValue() != null) {
             builder.addParameter(entry.getKey(), entry.getValue().toString());