Windows: AFS_SERVER_FLUSH_DELAY AFS_SERVER_PURGE_DELAY

Windows: AFS_SERVER_FLUSH_DELAY AFS_SERVER_PURGE_DELAY

Alter the flush delay to 5 seconds from 30 seconds

Alter the purge delay to 300 seconds from 5 seconds

Change-Id: I3f8e79d84582c4015e35d58cf1bedc9a023c0d73
Reviewed-on: http://gerrit.openafs.org/6554
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>