Fix xunit test result call

netci.groovy

@@ -46,7 +46,7 @@ def static getBuildJobName(def configuration, def os) {
             }
 			
 			// TODO: set to false after tests are fully enabled
-			def skipIfNoTestFiles = 'true'
+			def skipIfNoTestFiles = true
             
             Utilities.simpleInnerLoopJobSetup(newJob, project, isPullRequest, "Jenkins ${os} ${configuration}")
             Utilities.addXUnitDotNETResults(newJob, 'tests/TestResults/**/*_Xml.xml', skipIfNoTestFiles)