tests: recover: use same lease delta in recovered ring
tests: recover: use same lease delta in recovered ring

Otherwise leases might not expire when expected for
subsequent tests.

scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris