Meta server: fix chunk allocate handling op with version change by setting the status to 0 before attempting to acquire the lease. Reset the status in lease acquire RPC handler to correctly handle possible re-submit.
Meta server: fix chunk allocate handling op with version change by setting the status to 0 before attempting to acquire the lease. Reset the status in lease acquire RPC handler to correctly handle possible re-submit.

quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs,quantcast/qfs