BinaryMetadata may be lost if node with outdated metadata becomes a coordinator

Consider the following scenario in PDS-enabled mode:

1. Multinode cluster is up and running, BinaryMetadata for some type is created and spread across all nodes.
2. Node#1 leaves the cluster, then BinaryMetadata is updated one more time.
3. All cluster is restarted and Node#1 becomes a coordinator.

As in current implementation coordinator is considered to own a master copy of BinaryMetadata, it spreads its out-of-date version to all nodes so update from step#2 is lost.

We need to improve BinaryMetadata exchange protocol so nodes on join will send their version of BinaryMetadata to coordinator so it is able to update its own local version.