Merge pull request #118 from ViaQ/viaq_index_name_doc

Update documentation for viaq_index_name_doc field

Author: jcantrill

namespaces/_default_.yml

@@ -190,7 +190,12 @@ _index_type_:
         
     - name: viaq_index_name
       type: keyword
-      example: project.my-cool-project-in-lab04.748e92c2-70d7-11e9-b387-000d3af2d83b.2019.05.09
+      example: container.app-write
       description: |
-        Index name in which this message will be stored within the Elasticsearch.
-        The value of this field is generated based on the source of the message. 
+        For Elasticsearch 6.x and later this is a name of a write index alias. The value depends on a log type
+        of this message. Detailed documentation is found at
+        https://github.com/openshift/enhancements/blob/master/enhancements/cluster-logging/cluster-logging-es-rollover-data-design.md#data-model
+        
+        For Elasticsearch 5.x and earlier an index name in which this message will be stored within the Elasticsearch.
+        The value of this field is generated based on the source of the message. Example of the value
+        is 'project.my-cool-project-in-lab04.748e92c2-70d7-11e9-b387-000d3af2d83b.2019.05.09'.