During master election each node pings in order to discover other nodes and validate the liveness of existing
nodes. Based on this information the node either discovers an existing master or, if enough nodes are found
(based on `discovery.zen.minimum_master_nodes>>) a new master will be elected.  Currently, the node that is
elected as master will currently update it the cluster state to indicate the result of the election. Other nodes will submit
a join request to the newly elected master node. Instead of immediately processing the election result, the elected master
node should wait for the incoming joins from other nodes, thus validating the elections result is properly applied. As soon as enough
nodes have sent their joins request (based on the `minimum_master_nodes` settings) the cluster state is modified.

Note that if `minimum_master_nodes` is not set, this change has no effect.