HBASE-23154 list_deadservers return incorrect no of rows (#717)

Signed-off-by: stack <stack@apache.org>

Author: Karthik Palanisamy

hbase-shell/src/main/ruby/shell/commands/list_deadservers.rb

@@ -37,7 +37,7 @@ def command
           formatter.row([server.toString])
         end
 
-        formatter.footer(now, servers.size)
+        formatter.footer(servers.size)
       end
     end
   end

hbase-shell/src/test/ruby/hbase/admin_test.rb

@@ -98,6 +98,11 @@ def teardown
       assert(list.count > 0)
     end
 
+    define_test 'list_deadservers should return exact count of dead servers' do
+      output = capture_stdout { command(:list_deadservers) }
+      assert(output.include?('0 row(s)'))
+    end
+
     #-------------------------------------------------------------------------------
 
     define_test "flush should work" do