rules: go to the end of rules indeed when dm is suspended

rules: go to the end of rules indeed when dm is suspended

The previous patch 466266c does not make sense indeed, that is to say, if the SYSTEMD_READY is not recorded in the database, the GOTO="systemd_end" will not be applied.

The IMPORT{db} is actually a matching token, it returns false when there is no SYSTEMD_READY recorded in the database.

The previous patch 466266c tended to inherit the state of SYSTEMD_READY from the database and skip to the end of current rule file. But when the database does not contain SYSTEMD_READY, e.g., the dm-* is not set db_persistent during initrd and the database will be cleared after switching root, the following rules will still be applied not as expected.