ISPN-3001 DeltaAwareCacheEntry.getLifespan() and getMaxIdle() return 0 and cause instant expiration

These should actually return -1 for infinite lifetime.
Otherwise LocalDeltaAwareEvictionTest.testFineGrainedAtomicMap(), ReplDeltaAwareEvictionTest.testFineGrainedAtomicMap() and ReplDeltaAwareEvictionTest.testFineGrainedAtomicMap2() fail because the entry is already expired when it is fetched by the loader.
ISPN-2974 fix FGAHM