Verify block_row_count and and stripe_row_count options

A user reported
> Narendra Pradeep
> Hi
> In alter options command, CStore doesn't validates whether stripe_row_count greater than block_row_count. This causes all other queries to fail other than alter commands. Its better to validate during alter command itself
>
> Thanks
>

We should verify that block_row_count is always less than stripe_row_count when either option is getting set.