VM101 R20E R05 salvage methods

ACCESS=router-ops -> pve-mgts -> VM101 sh -s
CONTINUATION_FROM=R20E R01-R04 plus R20F/R20G
NEW_RETRY=false
NEW_FAILURE_INJECTION=false
MANAGED_SOURCE_CHANGE=false
RUNTIME_MUTATION=false
ORACLE=result.kv previous_generation_id != new_generation_id; active link == new_generation_id; activation.kv PASS
HEALTH=three consecutive five-slot samples
LOGS=durable events.tsv, retry log, result.kv and build/validate/activate logs
REBOOT=not tested
LOCAL_REPAIR=not tested