ub: ubcore add create/delete jfs api impls

driver inclusion
category: feature
bugzilla: NA
CVE: NA

--------------------------------

Ubcore add create/delete jfs, which will finally call hw driver's
registered method to create/delete jfs. Create jfs will also add
jfs in hash table to manage.

Signed-off-by: Guoxin Qian <qianguoxin@huawei.com>
Signed-off-by: Yizhen Fan <fanyizhen@huawei.com>