Improving timestamps of OnosSystemTest wiki graphs

Change-Id: I593e50506932d8ddacfff76a1feceb8ef2c1ca67
diff --git a/TestON/JenkinsFile/wikiGraphRScripts/trendIndividualTest.R b/TestON/JenkinsFile/wikiGraphRScripts/trendIndividualTest.R
index 93d58ed..5cc5c35 100644
--- a/TestON/JenkinsFile/wikiGraphRScripts/trendIndividualTest.R
+++ b/TestON/JenkinsFile/wikiGraphRScripts/trendIndividualTest.R
@@ -143,6 +143,8 @@
 
 print( "Constructing data frame from combined data." )
 
+latestBuildDate <- fileData$date[1]
+
 dataFrame <- melt( categories )
 
 # Rename column names in dataFrame
@@ -238,7 +240,7 @@
                                                    "Passed Cases",
                                                    "Planned Cases" ) )
 
-title <- labs( title = title, subtitle = lastUpdatedLabel() )
+title <- labs( title = title, subtitle = lastUpdatedLabel( latestBuildDate ) )
 
 # Store plot configurations as 1 variable
 fundamentalGraphData <- mainPlot +