[t:3997], change default from 1 to 5

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@36807 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/hatoku_hton.cc

@@ -1655,7 +1655,7 @@ static void tokudb_cleaner_iterations_update(THD * thd,
     assert(r==0);
 }
 
-#define DEFAULT_CLEANER_ITERATIONS 1
+#define DEFAULT_CLEANER_ITERATIONS 5
 
 static MYSQL_SYSVAR_ULONG(cleaner_iterations, tokudb_cleaner_iterations,
         0, "TokuDB cleaner_iterations",