IGNITE-2671 Node cannot join topology when cache lock is held.

[ALEKSEY KUZNETSOV]

Hello Igntrs!
I would like to start working on
*https://issues.apache.org/jira/browse/IGNITE-2671
<https://issues.apache.org/jira/browse/IGNITE-2671>* if you don't mind.
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*Best Regards,*

*Kuznetsov Aleksey*