[SPARK-20842][SQL] Upgrade to 1.2.2 for Hive Metastore Client 1.2

### What changes were proposed in this pull request?
Hive 1.2.2 release is available. Below is the list of bugs fixed in 1.2.2

https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12332952&styleName=Text&projectId=12310843

### How was this patch tested?
N/A

Author: Xiao Li <gatorsmile@gmail.com>

Closes #18063 from gatorsmile/upgradeHiveClientTo1.2.2.

sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala

@@ -92,7 +92,7 @@ private[hive] object IsolatedClientLoader extends Logging {
     case "14" | "0.14" | "0.14.0" => hive.v14
     case "1.0" | "1.0.0" => hive.v1_0
     case "1.1" | "1.1.0" => hive.v1_1
-    case "1.2" | "1.2.0" | "1.2.1" => hive.v1_2
+    case "1.2" | "1.2.0" | "1.2.1" | "1.2.2" => hive.v1_2
     case "2.0" | "2.0.0" | "2.0.1" => hive.v2_0
     case "2.1" | "2.1.0" | "2.1.1" => hive.v2_1
   }

sql/hive/src/main/scala/org/apache/spark/sql/hive/client/package.scala

@@ -56,7 +56,7 @@ package object client {
         "net.hydromatic:linq4j",
         "net.hydromatic:quidem"))
 
-    case object v1_2 extends HiveVersion("1.2.1",
+    case object v1_2 extends HiveVersion("1.2.2",
       exclusions = Seq("eigenbase:eigenbase-properties",
         "org.apache.curator:*",
         "org.pentaho:pentaho-aggdesigner-algorithm",