Test getDataColumnsFieldsAsCommaDelimitedString

Test	Status	Start time	Time (seconds)	Message
getDataColumnsFieldsAsCommaDelimitedString	1PASS	6 Oct 17:42:16	0.0

Target Class	Coverage contributed by getDataColumnsFieldsAsCommaDelimitedString
jalview.fts.core.FTSRestClient   jalview.fts.core.FTSRestClient	0.2741312727.4%