Increase the default value of the index mirroring cache timeout
from 10 seconds to 5 minutes. Since version 3.1.5, mirror
cache invalidation is tied to index updates. This makes the
timeout less relevant. The purpose of the cache timeout is
now avoid runaway memory usage.
Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>
c6104e0080