examples/priority_fallback_policy.csv

p, 10, alice, data1, read, allow
p, 10, alice, data1, write, allow
p, 10, bob, data2, read, allow
p, 10, bob, data2, write, deny

p, 100, fallback_admin, data1, read, allow
p, 100, fallback_admin, data1, write, allow
p, 100, fallback_admin, data2, read, allow
p, 100, fallback_admin, data2, write, allow

g, alice, fallback_admin
g, bob, fallback_admin