Rename

Author: wangyum

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/PushFoldableIntoBranchesSuite.scala renamed to sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/PushCastAndFoldableIntoBranchesSuite.scala

@@ -30,7 +30,7 @@ import org.apache.spark.sql.catalyst.rules._
 import org.apache.spark.sql.types.{BooleanType, IntegerType, StringType}
 
 
-class PushFoldableIntoBranchesSuite
+class PushCastAndFoldableIntoBranchesSuite
   extends PlanTest with ExpressionEvalHelper with PredicateHelper {
 
   object Optimize extends RuleExecutor[LogicalPlan] {