(#1709187) core:scope: fix missing fragment_path #11
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fragment_path in struct unit is a record of unit file, which will
be deleted (unlink) in unit_free().
After a daemon-reload process, the u->fragment_path of scope unit
will be missing (NULL). Then, the discarded session scope unit file
will be redundant until reboot.
Steps to Reproduce problem:
So in a daemon-reload case, scope_load() need unit_load_fragment() to reload
u->fragment_path.
(cherry picked from commit f838bf3)
Resolves: #1709187