Security API changes to add owner flag

[codebrain]

Relates to: elastic/elasticsearch#44936

[Mpdreamz]

[xUnit.net 00:07:57.4773251]     Tests.Indices.IndexManagement.SplitIndex.SplitIndexApiTests.ReturnsExpectedResponse [FAIL]
[2019-10-25T01:31:22,987][INFO ][o.e.c.m.MetaDataCreateIndexService] [writable-node-dbf2af9200] [test-ngramtests-initializerasync-ffeefa61] creating index, cause [api], templates [nest_tests], shards [2]/[0], mappings []
[2019-10-25T01:31:23,315][INFO ][o.e.c.m.MetaDataCreateIndexService] [writable-node-dbf2af9200] [nest-fluent-024f6b2e_clone] creating index, cause [clone_index], templates [], shards [1]/[0], mappings []
[2019-10-25T01:31:23,488][INFO ][o.e.c.m.MetaDataCreateIndexService] [writable-node-dbf2af9200] [nest-fluent-6e9833a8-1] creating index, cause [api], templates [nest_tests], shards [2]/[0], mappings []
  X Tests.Indices.IndexManagement.SplitIndex.SplitIndexApiTests.ReturnsExpectedResponse [901ms]
  Error Message:
   Tests.Framework.EndpointTests.ResponseAssertionException : Expected response.ShardsAcknowledged to be true, but found False.
Response Under Test:
Valid NEST response built from a successful (200) low level call on PUT: /nest-initializer-485aa104/_split/nest-initializer-485aa104-target?pretty=true&error_trace=true
# Audit trail of this API call:
 - [1] HealthyResponse: Node: http://localhost:9200/ Took: 00:00:30.6478671
# Request:
{"settings":{"index.number_of_shards":8}}
# Response:
{
  "acknowledged" : true,
  "shards_acknowledged" : false,
  "index" : "nest-initializer-485aa104-target"
}

shards_acknowledged is likely to stay flakey as we do a ridiculous amount of cluster updates.

[codebrain]

Ported to master

[codebrain]

Ported to 7.4