HBASE-26312 Shell scan fails with timestamp (#3734)

Signed-off-by: Duo Zhang <zhangduo@apache.org>

hbase-shell/src/main/ruby/hbase/table.rb

@@ -556,7 +556,7 @@ EOF
         end
 
         scan.setScanMetricsEnabled(enablemetrics) if enablemetrics
-        scan.setTimeStamp(timestamp) if timestamp
+        scan.setTimestamp(timestamp) if timestamp
         scan.setCacheBlocks(cache_blocks)
         scan.setReversed(reversed)
         scan.setCaching(cache) if cache > 0

hbase-shell/src/test/java/org/apache/hadoop/hbase/client/TestTableShell.java

@@ -35,6 +35,6 @@ public class TestTableShell extends AbstractTestShell {
 
   @Override
   protected String getIncludeList() {
-    return "test_table.rb";
+    return "table_test.rb";
   }
 }