save-code-now: Update waiting request statuses
Since the status of save-code-now requests has been updated, all the scn icinga checks were in error with an unsupported status:
SAVECODENOW CRITICAL - Save code now request for origin [...] took 0.00s and resulted in unsupported status: accepted ; pending.
This modification updates these statuses to restore icinga alerts and are already applied/tested on pergamon:
root@pergamon:~# grep "^#*WAITING" /usr/lib/python3/dist-packages/swh/icinga_plugins/save_code_now.py
#WAITING_STATUSES = ("not yet scheduled", "running", "scheduled")
WAITING_STATUSES = ("pending", "running")