Increase test timeouts that are too aggressive.

Seen these timeout in some precommit false positives, at a brief look I think likely due to timeout being to small.

• TestLeaseRecovery2
• TestDataNodeVolumeFailure

Can't seem to find from jenkins which test method is at fault, but TestLeaseRecovery2 has some 30-second timeout cases, and TestDataNodeVolumeFailure has 1 10-second timeout case.

We should make them at least 2 minutes, or maybe 10x local run time.