[SQL] logWarning should be logInfo in getResultSetSchema

Author: wangfei <wangfei_hello@126.com>

Closes #1939 from scwf/patch-5 and squashes the following commits:

f952d10 [wangfei] [SQL] logWarning should be logInfo in getResultSetSchema

sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/server/SparkSQLOperationManager.scala

@@ -151,7 +151,7 @@ class SparkSQLOperationManager(hiveContext: HiveContext) extends OperationManage
       }
 
       def getResultSetSchema: TableSchema = {
-        logWarning(s"Result Schema: ${result.queryExecution.analyzed.output}")
+        logInfo(s"Result Schema: ${result.queryExecution.analyzed.output}")
         if (result.queryExecution.analyzed.output.size == 0) {
           new TableSchema(new FieldSchema("Result", "string", "") :: Nil)
         } else {