Fixing property file overwritting in Jenkins Pipelines

Change-Id: Ic7325da3ed73cb07af01ce67e1f44db3215216c3
diff --git a/TestON/JenkinsFile/USECASEJenkinsFile b/TestON/JenkinsFile/USECASEJenkinsFile
index 62da8ff..4200f9a 100644
--- a/TestON/JenkinsFile/USECASEJenkinsFile
+++ b/TestON/JenkinsFile/USECASEJenkinsFile
@@ -32,7 +32,7 @@
 
 // read the TestON.property files and save it as a dictionary
 def prop = null
-prop = funcs.getProperties()
+prop = funcs.getProperties( "USECASE" )
 USECASE_tests = test_list.getTestsFromCategory( "USECASE" )
 
 // save directory and file.