Reset lock retry count if lock file timestamp changes #290
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When many pods are scheduled simultaneously, locking the store times out.
This is expected as each process needs exclusive lock while modifying the lock file.
In doing so, the lock file timestamp is changed. Update to this timestamp indicate
process(es) are actively using CNI plugin. The lock retry count is reset if the process
detects this change. As a result, timeout will only happen if the process cannot lock the
store while it remain unchanged for the duration of the timeout.