hulk inclusion
category: feature
feature: IMA Digest Lists extension
bugzilla: 46797

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Enable digest lists and PGP keys preload.
Signed-off-by: NRoberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NJason Yan <yanaijie@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>