* Updated docs for cross-cluster search
Wildcards are now supported in both cluster alias and index name,
and the "view_index_metadata" privilege is automatically conferred
by the "read_cross_cluster" role.
* For now, best to allow users permissions to query all indices on all remote clusters
Original commit: elastic/x-pack-elasticsearch@31959f78f4
This commit removes the SecuredString class that was previously used throughout the security code
and replaces it with the SecureString class from core that was added as part of the new secure
settings infrastructure.
relates elastic/x-pack-elasticsearch#421
Original commit: elastic/x-pack-elasticsearch@e9cd117ca1