CYBS-737: Security Util Test case modification to cover all 3 scenarios of cert loading

Author: sumadhav

java/src/test/java/com/cybersource/ws/client/SecurityUtilSystemTest.java

@@ -181,7 +181,6 @@ public void testMerchantIdentityToKeyStore() throws Exception{
 
 	@Test  
     public void testCertificateCacheEnabled() throws Exception{
-        merchantProperties.setProperty("keyFilename", merchantProperties.getProperty("keyAlias") + ".p12");
         merchantProperties.setProperty("certificateCacheEnabled", "true");
         // caching enabled (default)  
         final MerchantConfig configCertificateCachingEnabled =