sg3-utils: add bash to RDEPENDS_sg3-utils

Bash scripts:
sg3-utils/usr/bin/scsi_stop:#!/bin/bash
sg3-utils/usr/bin/scsi_mandat:#!/bin/bash
sg3-utils/usr/bin/scsi_logging_level:#! /bin/bash
sg3-utils/usr/bin/scsi_temperature:#!/bin/bash
sg3-utils/usr/bin/scsi_start:#!/bin/bash
sg3-utils/usr/bin/scsi_satl:#!/bin/bash
sg3-utils/usr/bin/scsi_readcap:#!/bin/bash
sg3-utils/usr/bin/scsi_ready:#!/bin/bash

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>