TransportMasterNodeOperationAction: retry operation if cluster state version changed while adding a ClusterStateListener

TransportMasterNodeOperationAction forwards incoming requests to the currently known master node. If that fails due to a connection error, a cluster state listener will be added in order to try again when a new master is elected. After the listener is in place, a check was made to see if the master has change *while* the listener was being added so that change will not be missed. The check was not enough as it may be that the same master was re-elected (for example, a network hick up) and thus test will fail even though the re-ellection event was missed. In these cases, the request would timeout unjustly. This commit changes this test to be  more strict and retry if the cluster state version changed during the addition of the listener.

Closes #5499
Merge GeoPoint specific mapping properties

Close #5505
[TEST] Fix rounding error problems in FuzzinessTests
Merge null_value for boolean field and remove include_in_all for boolean field in doc

Close #5502
Fix incorrect return impl in SmileXContent.createParser.

Close #5510