add config to control detecting conflict of opening block device

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I53Q6M


CVE: NA

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We have a feature to add info when opening a write opend block
device exclusively. Now we need to add switch to control it.

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Chao Liu <liuchao173@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>