Invalid UTF-8 start byte in logging stack in OCP 3

Issue

• Getting UTF-8 character errors:

  [2018-08-28 22:44:50,914][WARN ][rest.suppressed          ] path: /_bulk, params: {}
  com.fasterxml.jackson.core.JsonParseException: Invalid UTF-8 start byte 0x92
  at [Source: [B@387a6030; line: 1, column: 113]
  at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1702)
  

• This causes Fluentd to report a service unavailable when connecting to Elasticsearch in the EFK logging stack